Klingenfuss Hot Frequencies
Hot Frequencies and
Digital Data Transmission Screenshots

The following - very recent! - screenshots have been produced and uploaded to this international pooling webpage by our worldwide net of cooperators, using advanced equipment such as the superb PROCITEC Digital Data Decoders. All frequencies are in kHz, and all system times are UTC. Schedules and traffic details can be found in our 2023/2024 Guide to Utility Radio Stations. Standard aeronautical • meteorological • telecommunication abbreviations and ICAO Airport Codes and Airline Designators can be found everywhere; certain very special procedures and terms - particularly for avionics - are explained hereunder. Latest screenshots on top!


11086.5 kHz GYA Royal Navy London, United Kingdom

7646.0 kHz DDH7 Hamburg Meteo, Germany
DWD = Deutscher Wetterdienst

7646.0 kHz DDH7 Hamburg Meteo, Germany

4209.5 kHz XSQ Guangzhou Radio, China
What those megalomaniac Communist Chinese call "Zengmu Ansha Reef"
is in fact James Shoal, recognized by the Brits in the early 19th Century
and listed on the British Admiralty Chart in the 1870s (!).
Needless to say, located a mere 83 kilometres off Bintulu in Sarawak,
BETING SERUPAI belongs perfectly to the continental shelf and EEZ of MALAYSIA,
and has never repeat NEVER been a territory of Communist "China"
that is more than 1,800 kilometres repeat
MORE THAN ONE THOUSAND EIGHT HUNDRED KILOMETRES away!
Alamak!! Tak boleh tahan lah!!!

Communist China's criminal territorial claim across the South China Sea
all the way down to the shores of Indonesia ...
"Absurd 'historic rights' over everything inside the line."
The Economist, 23 September 2023, page 46
Click to enlarge!

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft HZ-NS58 + SU-GCH + 554 + 556 + flight UAE185
554 and 556 are Airbus A320-214CJ Prestige of the Royal Air Force of Oman ...
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
DA = Departure Airport
DCDU = Datalink and Control Display Unit
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PHC = Probe Heat Computer
SDAC = System Data Acquisition Computer
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report OOMS - OOSA ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

4209.5 kHz XVN Nha Trang Radio, Viet Nam

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft B-221H + CS-TSM + EC-OES + G-VGBR + HZ-AQI + UK67004 + 5Y-CYE + 9V-SHL + flight VIR4C
AA = Arrival Airport
AP = Approach type and runway number
DA = Departure Airport
DT = Destination, followed by the runway number
FN = Flight Number
FPN = Flight Plan Report downlink
OCC = Operations Control Centre
REQPWI = Predicted Wind Request for FL 410 390 360 340
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-32AG + B-6175 + B-6231 + JA933A + N877FD + flight CCA194
CDM = Collaborative Decision-Making (for the turn-round and
de-icing process, considering TSAT and TOBT) - see here
AGM = Miscellaneous Air/Ground Message
EEP = ETOPS Entry Point
OMC = Operations Management Center
SOBT = Scheduled Off Block Time
TI2 = Terminal Information Request
TOBT = Target Off Block Time
TSAT = Target Start-Up Approval Time
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 (!) kHz NRV United States Coast Guard Apra Harbour, Guam
BNM = Broadcast Notice to Mariners
GU = Guam
LLNR = Light List Number

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-222M + B-308X + B-6175 + B-8468 + HL8502 + HL7740 + HS-XTN + flight CSC897
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
M1B = Predicted Wind Request for routing to RKSI
PDC = Pre-Departure Clearance
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
VSC = Vacuum System Controller
WN = Warning Number, followed by the Date-Time Group

518.0 kHz XSG Shanghai Radio, China

518.0 kHz UFL Vladivostok Radio SE, Russian Federation
Zaliv Petra Velikogo = Peter the Great Gulf

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-30FR + B-32AG + B-8978 + N867FD + RPC8395 + 9V-SGC + 9V-SHH + flight CCA186
FOD = Flight Operations Dispatch
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz JNX Kushiro Radio, Japan

518.0 kHz JGC Yokohama Radio, Japan
KDDI = Kokusai Denshin Denwa Ido

13312.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-1242 + B-2077 + DQ-FJU + JA213P + JA801A + RA73677 + RPC9934 + 9V-SJD + flight CES227
AGM = Miscellaneous Air/Ground Message
AIMS = Airplane Information Management System
CFB = Centralized Fault Book
DA = Departure Airport
DB = Data Base
DM = Time Stamp
DS = Destination Airport
EOR = End of Report
NCMM = Network Channel Management Monitor
OCC = Operations Control Centre
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz Cape Columbine Radio, South Africa (Republic of)

518.0 kHz Cape Columbine Radio, South Africa (Republic of)

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-1297 + B-6430 + CC-CXI + EI-MYY + N518DZ + N617UP + RPC8612 + flight UPS296
CFD = Centralized Fault Data
ECS = Environmental Control System
FOD = Flight Operations Dispatch
TI2 = Terminal Information Request
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-304N + B-2420 + B-6329 + JA213P + flight CES508
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
TI2 = Terminal Information Request

6535.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-EUN + B-306Y + N607UP + N879FD + OH-LWC + flight CXA803
Cruise data ZGGG - WSSS ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
TI2 = Terminal Information Request
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

6535.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight SAA024

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam
Warnings still in force - received 091550Z APR 2024

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VMAP + N512DN + flight KAL925
Riding on the North Atlantic Jet Stream over the Caribbean
at 582 knots = 1077 kilometres per hour ...
FMC = Flight Management Computer
FMS = Flight Management System
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia

518.0 kHz Balasore Radio, India
IAF = Indian Air Force
IMD = India Meteorological Department
INW = Indian Navigational Warning

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A7-ANL + B-7836 + B-18905 + HL7211 + HL7616 + JA201P + JA208P + JA222A + 9V-SGG + flight CES565
Code figures for RCTP runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
LGTP = Light Plus Turbulence = relatively greater intensity
OCC = Operations Control Centre
TI2 = Terminal Information Request
TPEOD = Taipei Operational Department
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• Engine Cruise Report ROMY - RJBB ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-1243 + B-1638 + JA211A + JA212P + JA222A + JA828P + flight APJ27
AGM = Miscellaneous Air/Ground Message
ITC = Inter-Tropical Convergence Zone
LGTM = Light Minus Turbulence = relatively weaker intensity
LGTP = Light Plus Turbulence = relatively greater intensity
OCC = Operations Control Centre
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz GNI Niton Radio, United Kingdom
FOST = Flag Officer Sea Training
GUNFACTS = Practice firing intentions by military units
SUBFACTS = Planned or known submarine activity

518.0 kHz 9AS Split Radio, Croatia

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft HS-XTH + PR-TYK + TC-LGL + 9V-SCI + flight MAS71
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-XWB + B-306Y + B-5919 + HS-XTG + HS-XTH + TC-LGP + 9V-SHC + 9V-SHU + flight FX6826
CFB = Centralized Fault Book
ND = Navigation Display
OCC = Operations Control Centre
OCCS = Operations Control Centre Singapore
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
WXR = Weather Radar
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4210.0 (not 4209.5!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
RDP = Rio de la Plata

4210.0 (not 4209.5!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz VAJ Canadian Coast Guard Prince Rupert BC, Canada
Digby is a small island off Prince Rupert
Haida Gwaii = ex Queen Charlotte Islands

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft C-FPQB + CN-RGY + ZS-SXJ + 5Y-CYE + flight DAH406
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
ZUR = Zuidafrikaanse Radio = SAA Operations Control Jo'burg
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz XSX Chi-Lung Radio, Taiwan (Democratic Republic of China)
VTS = Vessel Traffic Service

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-32D2 + B-306Y + B-5931 + F-WZGU + RA73745 + TF-PPE + 9H-SWK + flight TS0122
F-WZGU is an Airbus A350-900 to become N521DN of Delta Airlines
Today on engine run and taxi checks ...
ADIRU = Air Data Inertial Reference Unit
AFS = Auto Flight System
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver

518.0 kHz PKX Jakarta Radio, Indonesia
KM = Kapal Motor = Motor Ship

4209.5 kHz XVG Hai Phong Radio, Viet Nam

4209.5 kHz XVN Nha Trang Radio, Viet Nam

4209.5 kHz XVG Hai Phong Radio, Viet Nam

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-6043 + B-6045 + B-6586 + JA208P + JA209P + JA214A + JA809A + N986NK + flight CCA190 + CCA857
AGM = Miscellaneous Air/Ground Message
DX = Dispatcher
HNDMAT = Haneda Meteorological Advice Team
LGTM = Light Minus Turbulence = relatively weaker intensity
LGTP = Light Plus Turbulence = relatively greater intensity
SR = Sunrise
SS = Sunset

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-30CW + B-5922 + B-6586 + HL8080 + JA821P + JA903P + flight ANA780
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DFD = Digital Flight Data
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
LGTM = Light Minus Turbulence = relatively weaker intensity
LGTP = Light Plus Turbulence = relatively greater intensity
PES = Passenger Entertainment System
SR = Seat Row
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8927.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-2485 + B-7836 + HL7626 + HL8080 + JA12KZ + N110FE + N866FD + N989NK + flight ANA184
The INRANGE message announces the aircraft being within VHF range of the DS
CFD = Centralized Fault Data
DS = Destination Airport
FLCN = Functional Logistic Control Number
WSI = Weather Services International
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz UDN Novorossiysk Radio, Russian Federation

518.0 kHz 9HD Valetta Radio, Malta
SOLAS = Safety of Life at Sea

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N615FE + TC-LGL + 9V-SCC + 9V-SCN + 50010B + flight CPA826
DFD = Digital Flight Data
OCCS = Operations Control Centre Singapore
TI2 = Terminal Information Request
TOBT = Target Off Block Time
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft 50010B + flight AS1410
United States Air Force Lockheed C-5M Super Galaxy enroute LERT - KSUU ...
So the military (or just the USAF only?)
uses the worldwide day-month-year standard 01042024
while the public ... you know ;-))
DC = Date-Time Code
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz SUK Quseir Radio, Egypt
BA = British Admiralty
EAFMS = Egyptian Authority for Maritime Safety
This is the former PLA (Ports and Lighthouses Administration) ...

518.0 kHz 3VL Kelibia Radio, Tunisia
NTM = Notice to Mariners

518.0 kHz 4XO Haifa Radio, Israel
BA = British Admiralty
IMOT = Israel Ministry of Transport and Road Safety
NTM = Notice to Mariners

518.0 kHz SVK Kerkyra Radio, Greece

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-BDC + C-FRTU + EI-TYC + JA873A + N609UP + N628UP + YU-ARB + flight AFR62K
Code figures for PANC runways braking action - see e.g. here
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CFB = Centralized Fault Book
CFD = Centralized Fault Data
FDU = Fire Detection Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
TI2 = Terminal Information Request
VSC = Vacuum System Controller
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft JA207P + JA812A + flight TAM365
Increasing solar activity - and the ionosphere going totally crazy:
SIGMET uplinks for domestic hops in Japan ... via Santa Cruz!
AGM = Miscellaneous Air/Ground Message
LGTM = Light Minus Turbulence = relatively weaker intensity
OCC = Operations Control Centre

518.0 kHz VBR Canadian Coast Guard Ferndale ONT, Canada

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft A6-EUN + B-20CJ + B-2769 + HS-XTH + RPC8606 + 9V-SCN + 9V-SHP + flight SIA279
ZFW + TOF = TOW - TIF = LAW
AZFW = Actual Zero Fuel Weight
DOI = Dry Operating Index
EFOB = Estimated FOB
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
FRP = Facilities Response
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz 9VG Singapore Radio, Singapore
Ships piloting and routing ...
DFT = Draft
DWT = Dead Weight Tonnage
OFB = One Fathom Bank = Sandbank Shoal at N0305 E10040
1.8288 metres = 1 fathom = 2 yards = 6 feet = 18 hands = 72 inches ...
= 30 ears = 60 noses = 180 teeth (sorry, just joking ;-))
SPOCC = Singapore Port Operations Control Centre

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft HZ-NS54 + PK-BGK + 9V-SCN + 9V-SCU + flight SIA479
Cruise parameters WADD - YPAD ...
DFB = Digital Flight Book
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

21928.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-32AG + B-1111 + B-6012 + B-8396 + HS-XTN + N507DN + N570UP + 9V-SCJ + flight APJ210
CFB = Centralized Fault Book
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FMC = Flight Management Computer
FMS = Flight Management System
FR = Fault Report, followed by the Date-Time Group
PD = Profile Descent
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department
INW = Indian Navigational Warning
MMB = Maharashtra Maritime Board

518.0 kHz Vengurla Point Radio, India
IMD = India Meteorological Department

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada
Amphitrite Point Lighthouse is 40 kilometres south of Tofino ...

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
Maritime safety information ...
The date reads 6 3 30 = 2024 March 30
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-30DE + B-6331 + CC-CXE + HL7635 + JA831A + N865FD + RPC9930 + flight KAL234
RJTT - RKSS climb parameters ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
ACMF = Aircraft Condition Monitoring Function
AGM = Miscellaneous Air/Ground Message
AOC = Airline Operations Control
DFB = Digital Flight Book
DFD = Digital Flight Data
TI2 = Terminal Information Request
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-305Y + B-1063 + N404KZ + RA73673 + RA73676 + UK32011 + flight UAE417
RA73673 is the "re-registered" (read: seized) Aurora Airbus A319-111
leased from AMCK (Aviation Maverick Cheung Kong) Holdings Ireland Limited
and originally registered as VQ-BBD in Bermuda ...
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
• Engine Cruise Report ZGSZ - YSSY ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea
GK2A = GEO KOMP 2A = Geostationary Korea Multi Purpose Satellite
KMA = Korea Meteorological Administration

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RGK + CS-TON + EC-OAP + G-VLDY + G-VSXY + HZ-NE22 + N967AM + 9V-SGA + flight FIN146
9V-SGA operating one of the daily 18-hours flights WSSS - KJFK - WSSS ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AA = Arrival Airport
ADR = Air Data Reference
AGM = Miscellaneous Air/Ground Message
AP = Approach type and runway number
CFB = Centralized Fault Book
DA = Departure Airport
DMC = Display Management Computer
DME = Distance Measuring Equipment
FLR = Failure
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
RA = Radio Altimeter
REQFPN = FPL report request uplink
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
Warnings still in force - received 291000Z MAR 2024

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-1567 + B-6131 + B-7898 + EI-KBA + EI-KGC + JY-BAG + N570DZ + RA73151 + RA73228 + SU-GFY + flight AAR542
AGM = Miscellaneous Air/Ground Message
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz TAH Istanbul Radio, Turkey
JCC = Joint Coordination Centre
UAV = Unmanned Aerial Vehicle

12315.0 kHz IDN Italian Navy Napoli, Italy

15586.0 kHz RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft OH-LWE enroute EFHK - VTBS
For the complete message see below the following screenshot ...
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit
• Engine Cruise Report EFHK - VTBS ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-ATF + N103FE + OH-LWE + 9V-SHI + 9V-SJD + flight CSZ902
The INRANGE message announces the aircraft being within VHF range of the DS
CFB = Centralized Fault Book
DS = Destination Airport
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft N103FE + 4R-ABS + 9V-SJE + 9V-SJF + 9V-SMR + flight QTR945
DFD = Digital Flight Data
OCCS = Operations Control Centre Singapore
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-20A2 + 9V-SHK + 9V-SHS + 9V-SJE + 9V-SMB + 9V-SMR + flight QTR945
DAR = Data Access Recorder
DFB = Digital Flight Book
EGT = Exhaust Gas Temperature
EPR = Engine Pressure Ratio
FCNT = (DAR) Frame Counter
FF = Fuel Flow (for engines 1 + 2)
ISFC = Indicated Specific Fuel Consumption
OIP = Oil Pressure
OIQ = Oil Quantity
OIT = Oil Temperature
TLA = Thrust Lever Angle
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-32CB + B-325M + B-2291 + B-5681 + B-6333 + B-6927 + JA212A + N854FD + 9V-SMR + flight CCA857
GOCC = Global Operations Control Center
TI2 = Terminal Information Request
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz United States Coast Guard Savannah GA, United States of America
BNM = Broadcast Notice to Mariners
GUNEX = Gunnery Exercise
JSWTR = Jacksonville Shallow Water Training Range

518.0 kHz EQI Abbas Radio, Iran

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft B-18906 + CC-CXJ + TC-LGN + XA-ADC + flight G41998
MMXX - SAEZ - L/R engine settings ...
DAR = Data Access Recorder
DFB = Digital Flight Book
FCNT = (DAR) Frame Counter
ISFC = Indicated Specific Fuel Consumption
MDPWI = Meteorological Data - Predicted Wind for FL 390 340
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5932.8 (!) kHz Digital data station

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-7881 + JA811A + JA820P + N507DN + flight UAL6
PASY is an ETOPS emergency alternate airport in the Alaskan Aleutian Islands
for trans-Pacific flights ... RWY 10/28 is 3049 metres long
AGM = Miscellaneous Air/Ground Message
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-30FN + B-1566 + B-5936 + flight GA5790
• Engine Cruise Report ZSPD - RJBB ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

518.0 kHz NMW United States Coast Guard Astoria OR, United States of America
BNM = Broadcast Notice to Mariners

518.0 kHz NMQ United States Coast Guard Long Beach CA, United States of America
ASW = Anti-Submarine Warfare
BNM = Broadcast Notice to Mariners
FLETA = Fleet Training Area
SD = San Diego
SHOBA = Shore Bombardment Area
SOAR = Southern California ASW Range

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-7836 + B-18902 + CN-RGG + ES-SAF + JA804A + N570UP + PK-BGZ + VN-A893 + flight MCKY96
Increasing solar activity - and the ionosphere going totally crazy:
METAR uplink for a DIAP - GMMN West African regional flight ... via Hawaii!
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
FSM = Flight System Message
RCD = Request for Departure Clearance
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 6 3 26 = 2024 March 26
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment ...
The date reads 6 3 26 = 2024 March 26
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

13312.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft A6-ATD + A6-EEL + B-2091 + B-5962 + HZ-NE22 + HZ-NS24 + flight CES615
AMDAR = Aircraft Meteorological Data Relay VGHS - OEJN
CFB = Centralized Fault Book
CFD = Centralized Fault Data
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
OM = Operations Manual
OTP = On Time Performance
STA = Scheduled Time of Arrival

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-1566 + B-18902 + N874FD + VH-XQU + flight AS1112
VH-XQU is the daily shuttle service YMML - NZAA - YMML ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
Code figures for ZSPD runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
RWYCC = Runway Condition Code
TDZ = Touchdown Zone
TI2 = Terminal Information Request
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-2292 + HL7625 + HL8387 + N454PA + N583UP + 9V-SMV + flight FDX828
CFD = Centralized Fault Data
ECS = Environmental Control System
PD = Profile Descent
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-CXF + C-GOKC + F-HRBD + G-VEII + LV-KHU + N819CA + PR-TYR + flight KAL255 + TS0681
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AA = Arrival Airport
AP = Approach type and runway number
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
DA = Departure Airport
ECAM = Electronic Centralized Aircraft Monitoring
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FN = Flight Number
FPN = Flight Plan Report downlink
FWC = Flight Warning Computer
REQPWI = Predicted Wind Request for FL 410 390 360 340
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
BNM = Broadcast Notice to Mariners

8085.8 kHz Digital data station

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft HL8387 + JA814A + N509DN + N843FD + N26967 + TF-PPE + XA-VBB + XA-VBW + flight KAL214
DT = Destination, followed by the runway number
FMC = Flight Management Computer
OMC = Operations Management Center
VA = Volcanic Ash
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

VAAC Tokyo ...

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight AS0234

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
IAX = India-Asia Express Submarine Cable
Warnings still in force - received 222320Z MAR 2024

518.0 kHz XVT Da Nang Radio, Viet Nam
Warnings still in force - received 222140Z MAR 2024

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft CN-RGK + CN-RGX + EI-KBM + EI-KDD + EI-KGI + HZ-NS34 + HZ-NS35 + RA73228 + 5A-ONA + flight KNE045
AFS = Auto Flight System
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FADEC = Full Authority Digital Engine Control
FCU = Flight Control Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
WN = Warning Number, followed by the Date-Time Group
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

490.0 kHz UUI Odessa Radio, Ukraine
Warnings still in force - received 210230Z MAR 2024

490.0 kHz UWT Taganrog Radio, Russian Federation
Warnings still in force - received 210220Z MAR 2024

490.0 kHz HZH Jeddah Radio, Saudi Arabia
AUV = Autonomous Underwater Vehicle

21928.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-2419 + B-6597 + JA213P + JA215P + JA825P + N573UP + N610UP + 9V-SJB + flight CES560
AGM = Miscellaneous Air/Ground Message
NCAA = National Collegiate Athletic Association
PD = Profile Descent
TI2 = Terminal Information Request
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4199.8 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

518.0 kHz Famagusta (?) Radio, Cyprus
This strange new broadcast seems to originate from the Turkish-occupied territory of Cyprus ...
Anyway, time slot E is assigned to Samsun Radio in Turkey

518.0 kHz A9M Hamala Radio, Bahrain
BA = British Admiralty
BAPCO = Bahrain Petroleum Company
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service
PMA = Ports and Maritime Affairs

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-30FD + B-2082 + B-2291 + B-5921 + JA833A + JA874A + JA893A + N610UP + 9V-SJF + flight CSZ945
CFB = Centralized Fault Book
CFD = Centralized Fault Data
CHS = Cargo Handling System
DB = Data Base
DFB = Digital Flight Book
EOR = End of Report
FDE = Fault Detection and Exclusion
PD = Profile Descent
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

9982.5 kHz KVM70 Honolulu Meteo, Hawaii

8416.5 kHz LGS Svalbard Radio, Spitsbergen, Norway
002570000 is the station's MMSI (Maritime Mobile Service Identity) code

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft A7-ANB + N101FE + N609UP + N804VL + N866FD + N890FD + flight FDX526
AGM = Miscellaneous Air/Ground Message
GOC = Global Operations Control
MDPWI = Meteorological Data - Predicted Wind for FL 350
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz Vakalpudi Radio, India
IMD = India Meteorological Department
MMB = Maharashtra Maritime Board

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft RA73156 + flight CES521
RA73156 is the "re-registered" (read: seized) Aeroflot Airbus A350-941
leased from SB Leasing Ireland Limited
and originally registered as VP-BYF in Bermuda ...
Test registration F-WWBW has been delivered from LFBO to UUEE
on 24 FEB 2022 - the same day Russia invaded Ukraine
It has then been parked at UUEE until 30 MAY 2023 ...
Below is just a sample of a never-ending list
of failure messages in Airbus' XML format ...
AFDX = Avionics Full-Duplex Switched Ethernet
AESS = Aircraft Environment Surveillance System
AFS = Auto Flight System
CFB = Centralized Fault Book
CMS = Cabin Management System
DU = Display Unit
FAP = Flight Attendant Panel
FMC = Flight Management Computer
MFD = Multi-Function Display
MSN = Manufacturer's Serial Number
PWS = Predicted Wind Shear Alert System
RTR = Ready To Receive
UADF = User Application Definition File

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-32D2 + B-1168 + B-1242 + B-1957 + N103FE + N29977 + flight FX5196
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
DFD = Digital Flight Data
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PR-TYO + PR-TYS + PR-YYJ + ZS-SXM + flight MAA643
AMDAR = Aircraft Meteorological Data Relay FACT - SBGR
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AA = Arrival Airport
DA = Departure Airport
DT = Destination, followed by the runway number
FN = Flight Number
FPN = Flight Plan Report downlink
REQFPN = FPL report request uplink
TS = Time Stamp
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft N966AM + flight G41985
DFB = Digital Flight Book
PACK = Pressurization Air Conditioning Kit

518.0 kHz Don Sak Radio, Thailand
005671000 is the station's MMSI (Maritime Mobile Service Identity) code
Warnings still in force - received 161420Z MAR 2024
See 5 AUG 2021 NAVTEX Panel Report

518.0 kHz Hamburg Meteo, Germany
ENBW = Energie Baden-Wuerttemberg
NCC = National Co-Ordination Centre

518.0 kHz LGT Tjoeme Radio, Norway
NM = Notice to Mariners

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GCJL + C-GTSZ + EC-MCU + F-HRBD + N965AM + YV3535 + flight UAL945
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
PACK = Pressurization Air Conditioning Kit
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report MDPC - CYUL ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-CXH + C-GUBL + JY-BAG + N481AV + PS-LAA + TF-PPF + ZS-SXJ + flight TS0600
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AGM = Miscellaneous Air/Ground Message
REQPWI = Predicted Wind Request for FL 410 400 390 370
ZUR = Zuidafrikaanse Radio = SAA Operations Control Jo'burg
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam
Warnings still in force - received 151400Z MAR 2024

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N508DN enroute RKSI - KMSP
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

AFDX = Avionics Full-Duplex Switched Ethernet
CMS = Cabin Management System
MFD = Multi-Function Display
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
RTR = Ready To Receive

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

7880.0 kHz DDH3 Hamburg Meteo, Germany
ICON = Icosahedral Nonhydrostatic Model

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft HL7211 + RPC9934 + 3B-NCL + 9V-SKY + flight AAR601
CFB = Centralized Fault Book
ECS = Environmental Control System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PACK = Pressurization Air Conditioning Kit
RFU = Radio Frequency Unit
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft CC-BGH + EC-NCK + N104FE + N611UP + N633UP + N984AK + RPC8395 + 9V-SMG + flight KAL407 + SIA478
EC-NCK is a daily shuttle service NZAA - YPPH - NZAA
by Wamos Air on wet lease for Air New Zealand ...
ZFW + TOF = TOW - TIF = LAW
CFD = Centralized Fault Data
DFD = Digital Flight Data
DOI = Dry Operating Index
ECS = Environmental Control System
TTO = Target Time Over
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft JA10VA + N625FE + N26970 + 9V-SHU + 9V-SJA + flight CPA135
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
OCC = Operations Control Centre
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz LFO Oerlandet Radio, Norway

518.0 kHz OXJ Torshavn Radio, Faroe Islands, Denmark
DMI = Danish Meteorological Institute

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft 9V-SJA enroute KLAX - WSSS
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

CIDS = Cabin Intercommunication Data System
CMS = Cabin Management System
FAP = Flight Attendant Panel
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
PSU = Passenger Service Unit
RTR = Ready To Receive

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Maritime safety information for NAVAREAs 10/11 ...
KDDI = Kokusai Denshin Denwa Ido
MICS = Maritime Information and Communication System
The date reads 6 3 12 = 2024 March 12
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + flight KZR706 + THY8

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft EI-KBE + flight UAL38
Increasing solar activity - and the ionosphere going totally crazy:
Fuel calculation and SA uplink for a UACC - UAII
Central Asian domestic hop ... via Hawaii!
OWE + PLD = ZFW + TOF = TOW - BURN = LW
MIN DIVERSION + CONTINGENCY = TOTAL RESERVE + TRIP = ENDURANCE + TAXI = BLOCK
AGM = Miscellaneous Air/Ground Message
CI = Consistency Index
OWE = Operating Weight Empty

8425.5 kHz XSG Shanghai Radio, China
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs
Presumably local time used here since received at 1350 UTC ...

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N605FE + flight AS0068
ADC = Air Data Computer
ADF = Automatic Direction Finder
CFDIU = Centralized Fault Data Interface Unit
DEU = Decoder-Encoder Unit
DFB = Digital Flight Book
ECS = Environmental Control System
ESC = Environmental System Controller
FCC = Flight Control Computer
IRU = Inertial Reference Unit
PRV = Pressure Regulation Valve

490.0 kHz IGS Piombino Radio, Italy

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VEII + N574FE + N819CA + N16009 + RA73712 + SU-GES + flight TS0600
Increasing solar activity - and the ionosphere going totally crazy:
ALT and ETA downlink from a UUEE - URSS domestic flight ... via New York!
In congested airports, metering allows the controllers
to manage ramp and taxi space by sequencing aircraft push and taxi
CFB = Centralized Fault Book
DFD = Digital Flight Data
DT = Destination, followed by the runway number
EIVMU = Engine Interface and Vibration Monitoring Unit
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
SFCC = Slat Flap Control Computer
TI2 = Terminal Information Request
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 kHz XSQ Guangzhou Radio, China
MSA = Maritime Safety Administration

8416.5 kHz NMF United States Coast Guard Boston MA, United States of America

8416.5 kHz NMF United States Coast Guard Boston MA, United States of America
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft A6-EUW + B-1431 + B-18910 + HS-XTH + 9V-SHU + flight CES507
AGM = Miscellaneous Air/Ground Message
REQPWI = Predicted Wind Request for FL 400 380 360 320
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz Veraval Radio, India
IMD = India Meteorological Department
INW = Indian Navigational Warning
MMB = Maharashtra Maritime Board

518.0 kHz NMO United States Coast Guard Honolulu, Hawaii
PMRF = Pacific Missile Range Facility

8677.0 kHz CBV Valparaiso Radio, Chile

8677.0 kHz CBV Valparaiso Radio, Chile
GFS = Global Forecast System

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-5908 + C-GUBT + ES-SAZ + HZ-NS32 + RA73102 + SU-GCH + UK33020 + 9V-SHQ + flight CSN341
AOA = Angle of Attack
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DA = Departure Airport
DFB = Digital Flight Book
DFD = Digital Flight Data
DM = Time Stamp
DS = Destination Airport
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GLS = GBAS (Ground-Based Augmentation System) Landing System
IVV = Inertial Vertical Speed
PES = Passenger Entertainment System
REQPWI = Predicted Wind Request for FL 410 390 370 340
SDU = Satellite Data Unit
VAC = Vertical Acceleration
WN = Warning Number, followed by the Date-Time Group
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RGH + EC-NCX + F-WZHD + HL8389 + N603FE + 9V-SMR + flight AT0565
F-WZHD is an Airbus A350-941 to become Lufthansa's D-AIXT ...
AGM = Miscellaneous Air/Ground Message
BJR = Bonjour
CDB = Commandant Du Bord
DFD = Digital Flight Data
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A6-XWC + B-2082 + EI-KGK + ET-AXS + HZ-NS49 + OH-LWO + 9XR-WX + flight QTR17V
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

10555.0 kHz VMW Wiluna Meteo WA, Australia

10555.0 kHz VMW Wiluna Meteo WA, Australia
MSLP = Mean Sea Level Pressure

10555.0 kHz VMW Wiluna Meteo WA, Australia

16806.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

11030.0 kHz VMC Charleville Meteo QLD, Australia
RSMC = Regional Specialized Meteorological Centre

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-1890 + B-18918 + JA211P + N618UP + N857FD + N955AK + flight UAL960
Enroute data KPDX - PHNL ...
A NOTAM decoder can be found e.g. here
Code figures for PANC runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
AI = Arrival Information
DI = Departure Information
FICON = Field Conditions
GC = Ground Connections
OCC = Operations Control Centre
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft EC-OAP + JA215P + JA825P + N454PA + N866FD + N870FD + N26960 + flight LAN705
AGM = Miscellaneous Air/Ground Message
TOMC = Technical Operations Maintenance Control
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

7795.0 kHz JMH2 Tokyo Meteo, Japan

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-30FR + EI-KDG + EI-KGH + ES-SAF + HZ-NS26 + flight QTR1X + VIR301
AFS = Auto Flight System
CFB = Centralized Fault Book
FAC = Flight Augmentation Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MDPWI = Meteorological Data - Predicted Wind for FL 320
REQPWI = Predicted Wind Request for FL 380 360 340 320

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + flight ABY514 + AFR194

11086.5 kHz GYA Royal Navy London, United Kingdom
ANPS = Ambient Noise Prediction System

518.0 kHz NMF United States Coast Guard Boston MA, United States of America
Strange that Boston transmits BNM for WA
Or is there any new station on time slot F on the West Coast?
BNM = Broadcast Notice to Mariners
LLNR = Light List Number

11086.5 kHz GYA Royal Navy London, United Kingdom

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EI-KGC + F-HRNB + HZ-NS74 + N27903 + OH-LWP + TC-MCZ + 5A-WLA + 9XR-WX + flight AIC129
CFB = Centralized Fault Book
FLR = Failure
FMS = Flight Management System
FR = Fault Report, followed by the Date-Time Group
LGCIU = Landing Gear Control Interface Unit
REQFPN = FPL report request uplink
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-1566 + C-FVLX + N579UP + UK33020 + 5Y-CYD + flight AAR202
PHNL runway 04R landing parameters ...
Increasing solar activity - and the ionosphere going totally crazy:
POSREP downlink from a OEMA - UTTT West Asian flight ... via Hawaii!
BTMS = Brake Temperature Monitoring System
E/O GRAD = Engine Inoperative Approach Climb Gradient
MOC = Meteorological Operations Center

490.0 (not 518.0!) kHz Sellia Marina Radio, Italy
Allora, ragazzi: di nuovo tutto sbagliato ...
I messaggi italiaaaaaani titolati W si trasmettono sulle 490,
i messaggi titolati V invece si trasmettono sulle 518
Te capì finalmente?!

8424.0 kHz SVO Olympia Radio, Athens, Greece

8806.3 kHz Digital data station

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

518.0 kHz CBV Valparaiso Radio, Chile
EGC = Enhanced Group Call
R/V = Research Vessel

9169.0 kHz Digital data station

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N573FE + N293UP + N606UP + N632UP + flight VS109V
CFB = Centralized Fault Book
CFD = Centralized Fault Data
CFP = Computerized Flight Plan
ETP = Equitime Point
FMS = Flight Management System
LRC = Long Range Cruise
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz LGQ Rogaland Radio, Norway
DMI = Danish Meteorological Institute
NTM = Notice to Mariners
NW = Navigational Warning

13074.0 kHz JFC Misaki Fisheries Radio, Japan
JAFIC = Japan Fisheries Information Service Center
The date reads 6 3 1 = 2024 March 1
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Latest tuna market prices ...
The date reads 6 3 1 = 2024 March 1
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

518.0 kHz EJM Irish Coast Guard Malin Head, Ireland

518.0 kHz GPK Portpatrick Radio, United Kingdom
Forsnaval is a site in the Stornoway MCA district
FOSNI = Flag Officer Scotland and Northern Ireland
GUNFACTS = Practice firing intentions by military units
MCA = Maritime and Coastguard Agency
SUBFACTS = Planned or known submarine activity

4209.5 kHz XSV Tianjin Radio, China
MSA = Maritime Safety Administration

7433.5 kHz HLL5 Soul Meteo, South Korea

7433.5 kHz HLL5 Soul Meteo, South Korea

490.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy

490.0 kHz OST Oostende Radio, Belgium

7396.9 kHz HSW64 Bangkok Meteo, Thailand

7396.9 kHz HSW64 Bangkok Meteo, Thailand

518.0 kHz NMG United States Coast Guard New Orleans LA, United States of America

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft B-321J + F-WWDW + G-POWK + G-VSXY + HZ-NS63 + N592FE + N627UP + TC-MCM + UK78706 + ZS-SXF + 9V-SHJ + flight GTI805
F-WWDW is an Airbus A350-1041 on specification test flight to become JAL's JA03WJ ...
AA = Arrival Airport
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DFD = Digital Flight Data
FLR = Failure
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
PHC = Probe Heat Computer
TAT = Total Air Temperature
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft G-VTOM + SU-GDX + UK78706 + ZS-SXJ + 7T-VJX + flight SU0629
CFB = Centralized Fault Book
DT = Destination, followed by the runway number
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
MDPWI = Meteorological Data - Predicted Wind for FL 360
REQPWI = Predicted Wind Request for FL 360
TS = Time Stamp
WN = Warning Number, followed by the Date-Time Group
ZUR = Zuidafrikaanse Radio = SAA Operations Control Jo'burg
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8416.5 kHz UAT Moscow Radio, Russian Federation
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8113.5 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation
Local time (e.g. 25 2005) used here since received at 1905 UTC ...

8317.8 kHz Digital data station

518.0 kHz EQM Bushire Radio, Iran

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska
NCEP = National Centers for Environmental Prediction

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-6043 + ES-SAZ + HZ-NS63 + RA73108 + RA73156 + RA73306 + SU-GCH + 5Y-CYC + 7O-AFE + 9V-SHQ + flight KNE782
The INRANGE message announces the aircraft being within VHF range of the DS
DFB = Digital Flight Book
DFD = Digital Flight Data
DT = Destination, followed by the runway number
FDE = Fault Detection and Exclusion
FN = Flight Number
GLS = GBAS (Ground-Based Augmentation System) Landing System
IVV = Inertial Vertical Speed
NAIP = National Aeronautical Information Publication
TI2 = Terminal Information Request
VAC = Vertical Acceleration
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft F-UJCT + RA73108 + RA73306 + SU-GEH + 7O-AFE + flight DP0163
DAR = Data Access Recorder
DFB = Digital Flight Book
FCNT = (DAR) Frame Counter
ISFC = Indicated Specific Fuel Consumption
REQPWI = Predicted Wind Request for FL 280
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

13988.5 kHz JMH4 Tokyo Meteo, Japan

5195.0 kHz DRA5 Kiel, Germany

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft OH-LWB enroute VTBS - EFHK
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft TF-PPE + flight UZB603
PDU = Pilot Display Unit
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 kHz TAH Istanbul Radio, Turkey
Warnings still in force - received 201800Z FEB 2024

7795.0 kHz JMH2 Tokyo Meteo, Japan

8151.0 kHz IDR Italian Navy Rome, Italy

16898.5 kHz XSG Shanghai Radio, China
Presumably local time used here since received at 0450 UTC ...

16898.5 kHz XSG Shanghai Radio, China
MSA = Maritime Safety Administration

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska
PKZ = AK Arctic

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-CWY + CN-RGZ + PR-TYK + PR-TYQ + 9H-NEE + flight ACA90
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
FCD = Flight Control Data

518.0 kHz UGE Arkhangelsk Radio, Russian Federation

518.0 kHz Gislovshammar Radio, Sweden

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft SE-DMR + 70029B + flight UAL79
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
FRP = Facilities Response
• Engine Cruise Report EKCH - KIAD ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America
NHC = National Hurricane Center

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America
NHC = National Hurricane Center

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America
NHC = National Hurricane Center

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-1072 + B-18909 + JA802A + N510DN + N574UP + N709AL + 9M-MAG + flight SIA36
AA = Arrival Airport
AI = Arrival Information
CFB = Centralized Fault Book
DA = Departure Airport
DI = Departure Information
DT = Destination, followed by the runway number
EFF = Electronic Flight Folder
GC = Ground Connections
WN = Warning Number, followed by the Date-Time Group
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8939.0 kHz H10 HFDL Muan Air, South Korea, + flight AMX058 + KZR963

11030.0 kHz VMC Charleville Meteo QLD, Australia

518.0 kHz JNR Moji Radio, Japan
LL = Light List

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

518.0 kHz UFO Kholmsk Radio FE, Russian Federation
Proliv = Strait

518.0 kHz Chukpy Radio, South Korea
JCS = Joint Chiefs of Staff

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft A6-BND + A7-API + N965AM + PR-TYP + PR-TYS + PR-YYC + ZS-SXJ + flight ACA90
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
PDU = Pilot Display Unit
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

12579.0 kHz NRV United States Coast Guard Apra Harbour, Guam
ITCZ = Inter-Tropical Convergence Zone

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 140020Z FEB 2024

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-6778 + N101FE + N867FD + N965AM + 9V-SKQ + 9V-SMA + flight CCA251
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
DFD = Digital Flight Data
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 131620Z FEB 2024
DWT = Dead Weight Tonnage

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz SVH Iraklion Radio, Greece
FORACS = Naval Forces Sensor and Weapons Accuracy Check Sites

518.0 kHz ESA Tallinn Radio, Estonia
PET = Saint Petersburg

518.0 kHz ZBM Hamilton Harbour Radio, Bermuda
NTM = Notice to Mariners

2054.0 kHz NOJ United States Coast Guard Kodiak, Alaska

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + flight SIA27

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft CN-ROZ + EI-GEY + N582FE + XA-DHN + flight VIR449
LEMD - MMMX L/R engine settings ...
AGM = Miscellaneous Air/Ground Message
DFD = Digital Flight Data
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam

7646.0 kHz DDH7 Hamburg Meteo, Germany
TSS = Traffic Separation Scheme
VTG = Verkehrstrennungsgebiet

7795.0 kHz JMH2 Tokyo Meteo, Japan

518.0 kHz Grimeton Radio, Sweden

8427.0 kHz KPH San Francisco Radio CA, United States of America

8427.0 kHz KPH San Francisco Radio CA, United States of America
MEBA = Marine Engineer's Beneficial Association
MMP = Masters, Mates and Pilots

8427.0 kHz KPH San Francisco Radio CA, United States of America
MITAGS = Maritime Institute of Technology and Graduate Studies
MMP = Masters, Mates and Pilots

518.0 kHz EAL Las Palmas Radio, Canary Islands
TSS = Traffic Separation Scheme

518.0 kHz Kao-Hsiung Radio, Taiwan (Democratic Republic of China)
VTS = Vessel Traffic Service

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
The date reads 6 2 2 = 2024 February 2
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

518.0 kHz VCO Canadian Coast Guard Port Caledonia NS, Canada

9165.0 kHz HLL Soul Meteo, South Korea

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-ROH + CN-ROT + F-HJAZ + G-VGEM + SU-GCN + flight SU1602
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AGM = Miscellaneous Air/Ground Message
DT = Destination, followed by the runway number
FN = Flight Number
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• Engine Cruise Report TAPA - EGLL ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system

PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

21928.0 kHz H16 HFDL Barrigada Air, Guam, + flight APJ27 + GTI855

518.0 kHz VRX Hong Kong Radio, China
Nice to see VRX uses intentionally
the internationally recognized British names
for those island groups in the South China Sea
and not those absurd fantasy names
applied by aggressive Communist China
that is going to grab every shoal all the way down
to the shores of Melayu dan Singapura -
more than 1,800 kilometres away from Hainan!
Alamak!! Tak boleh tahan lah!!!

518.0 kHz Sandakan Radio, Sabah, Malaysia
First Category = Sungai Sarawak - Sungai Sadong - Sungai Lundu
Second Category = Sungai Batang Lupar
Third Category = Sungai Regang up to Brunei
NTM = Notice to Mariners

490.0 kHz GCC Cullercoats Radio, United Kingdom

22462.8 kHz FUJ French Navy Noumea, New Caledonia

7433.5 kHz HLL5 Soul Meteo, South Korea

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N595FE + N954AV + N955AV + N987NK + TF-PPE + flight LAN572
AGM = Miscellaneous Air/Ground Message
DT = Destination, followed by the runway number
FN = Flight Number
TOCG = Take Off Centre of Gravity
ZFCG = Zero Fuel Centre of Gravity
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft ET-AYM + HZ-NE22 + 5H-TCO + 9V-SHA + 9V-SHL + flight IRA711
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-1083 enroute ZSPD - LIMC
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

GNSS = Global Navigation Satellite System
IR = Inertial Reference
MIAM = Media Independent Aircraft Message
MMR = Multi-Mode Receiver
PDU = Pilot Display Unit
RTR = Ready To Receive

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-XWB + C-GUBT + OH-LWI + OH-LWR + XA-DHN + YU-ARB + flight QTR005
LEMD - MMMX L/R engine settings ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-7800 + CN-RGY + CN-ROA + N864FD + OH-LWR + TC-MCN + flight KAL946
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
CFB = Centralized Fault Book
EOR = End of Report
FDE = Fault Detection and Exclusion
SCV = Surge Control Valve
• Engine Cruise Report KJFK - LTFM ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A7-ALY + CN-RAM + N842FD + OH-LWK + YR-WIN + flight DP6856
AFS = Auto Flight System
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
ECAM = Electronic Centralized Aircraft Monitoring
EFCS = Electronic Flight Control System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
TPIS = Tire Pressure Indicator System
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft LV-KHU + N702NK + N946AV + N956AV + 9H-SWM + flight GTI822
AMDAR = Aircraft Meteorological Data Relay SAEZ - MDPC
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
TS = Time Stamp
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N591FE + N748AV + flight AVA248 + LAN532
AGM = Miscellaneous Air/Ground Message
DT = Destination, followed by the runway number
FN = Flight Number
PDC = Pre-Departure Clearance
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft A7-ANI + B-20A2 + B-32AH + B-2091 + B-7836 + B-7838 + G-DHLK + flight FX5604
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
BLDV = Bleed Valve
DA = Decision Altitude
DFB = Digital Flight Book
DFD = Digital Flight Data
EGT = Exhaust Gas Temperature
EPR = Engine Pressure Ratio
FCNT = (DAR) Frame Counter
FF = Fuel Flow (for engines 1 + 2)
FMC = Flight Management Computer
HPV = High Pressure Valve
IRS = Inertial Reference System
ISFC = Indicated Specific Fuel Consumption
ISOV = Isolation Valve
IVV = Inertial Vertical Speed
N2DOT = High Pressure Shaft Acceleration
TCC = Turbine Case Cooling
VSV = Vacuum Switching Valve
WF / PB = Fuel Flow versus Burner Pressure
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8480.3 kHz FUF French Navy Fort de France, Martinique
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

518.0 kHz Igdlutaligssuaq Radio, Kook Island, Greenland

3900.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft G-ECLN + G-VUFO + TC-MCN + 7T-VJZ + flight AMX005
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
DT = Destination, followed by the runway number
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
PES = Passenger Entertainment System
WN = Warning Number, followed by the Date-Time Group
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

8682.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NHC = National Hurricane Center

8682.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

518.0 kHz Izmir Radio, Turkey
Warnings still in force - received 092120Z JAN 2024

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft B-LXM + PR-TYT + PR-TYV + PR-YYK + PR-YYL + RPC8612 + RPC8786 + RPC9934 + flight VIR11B
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AA = Arrival Airport
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DA = Departure Airport
ECAM = Electronic Centralized Aircraft Monitoring
EFCS = Electronic Flight Control System
FLR = Failure
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
SFCC = Slat Flap Control Computer
TS = Time Stamp
WN = Warning Number, followed by the Date-Time Group
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz CBP Puerto Montt Radio, Chile

518.0 kHz CBT Talcahuano Radio, Chile

518.0 kHz Keating Point Radio, Andaman Islands, India
INW = Indian Navigational Warning
MMB = Maharashtra Maritime Board

518.0 kHz IQM Mondolfo Radio, Italy
VTS = Vessel Traffic Service

518.0 kHz SUZ Serapeum Radio, Egypt
ADES = Advanced Energy Systems
ADMARINE = Jackup Rig operated by ADES
BA = British Admiralty

16135.0 kHz KVM70 Honolulu Meteo, Hawaii
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header
According to this NAVAREA 11 document, XSG uses indeed
transmitter identification character Q on both 518 and 486 kHz

518.0 kHz Porto Santo Radio, Madeira
CENCOMAR = Centro de Comunicacao de Dados e Cifra da Marinha
CLCM = Companhia Logistica de Combustiveis da Madeira

518.0 kHz OXF Simiutaq Radio, Greenland

518.0 kHz NMA United States Coast Guard Miami FL, United States of America
BNM = Broadcast Notice to Mariners

518.0 kHz CTV Portuguese Navy Lisbon, Portugal
CENCOMAR = Centro de Comunicacao de Dados e Cifra da Marinha

12579.0 kHz UAT Moscow Radio, Russian Federation

518.0 kHz LZW Varna Radio, Bulgaria

518.0 kHz EAV Valencia Radio, Spain

518.0 kHz XSZ Dalian Radio, China
MSA = Maritime Safety Administration

4209.5 kHz SVH Iraklion Radio, Greece

4209.5 kHz TAH Istanbul Radio, Turkey

10081.0 kHz H07 HFDL Shannon Air, Ireland, + flight AT0649 + AT851W

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
ITCZ = Inter-Tropical Convergence Zone

2998.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-2090 + B-6131 + SE-SMO + ZA-MMK + 50007B + 70031B + flight SS0970
Cruise data ZBAA - UUEE ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
DC = Time Stamp
PDU = Pilot Display Unit
REQPWI = Predicted Wind Request for FL 390 340 300
CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

13920.0 kHz VMC Charleville Meteo QLD, Australia

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight AMX026

490.0 kHz EAC Tarifa Radio, Spain

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz XSI Sanya Radio, China

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EVD + EI-KGI + ES-SAF + F-HTYH + N613UP + N786AV + N847FD + RA73108 + RA73231 + RA73302 + flight KNE666
Perfect OOOI ...
CFD = Centralized Fault Display
DFB = Digital Flight Book
DFD = Digital Flight Data
FCNT = (DAR) Frame Counter
FSM = Flight System Message
ISFC = Indicated Specific Fuel Consumption
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz VBA Canadian Coast Guard Pass Lake ONT, Canada

518.0 kHz VON Canadian Coast Guard Robin Hood Bay, NFLD, Canada
IF = Ice Free
OW = Open Water

518.0 kHz SVL Limnos Radio, Greece

518.0 kHz HSA Bangkok Radio, Thailand
005671000 is the station's MMSI (Maritime Mobile Service Identity) code
BKK = Bangkok

486.0 kHz Fuzhou Radio, China
Chinese teleprinter code after Latin alphabet header
Scheduled and received correctly at 1620
however using slot letter O (as on 518 kHz) instead of C ...

12579.0 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz Bjuroklubb Radio, Sweden

12666.3 kHz FUM French Navy Papeete, Tahiti, Polynesia (French)
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

490.0 kHz XVR Vung Tau Radio, Viet Nam
Warnings still in force - received 260330Z NOV 2023

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America
UMIB = Urgent Marine Information Broadcast

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft CC-BGN + EI-MAA + flight AVA087
ACDM = Airport Collaborative Decision Making
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
TI2 = Terminal Information Request
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

518.0 kHz Muttam Point Radio, India
IMD = India Meteorological Department

518.0 kHz EAR La Coruna Radio, Spain

8677.0 kHz CBV Valparaiso Radio, Chile

518.0 kHz Grindavik Radio, Iceland

518.0 kHz 5BA Nicosia Radio, Cyprus

518.0 kHz Antalya Radio, Turkey

12586.0 kHz UDK Murmansk Radio, Russian Federation
Warnings still in force - received 231500Z OCT 2023

8431.0 kHz XSQ Guangzhou Radio, China
N/W = Nautical Warning
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs
Presumably local time used here since received at 1320 UTC ...

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

518.0 kHz UHY Murmansk Radio, Russian Federation

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

2610.2 kHz FUO French Navy Toulon, France

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NHC = National Hurricane Center

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-1081 enroute ZBAA - LIMC + flight ASL69B
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

ACMS = Aircraft Condition Monitoring System
MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

19640.8 kHz Digital data station

16906.8 kHz FUV French Navy Jibuti, Djibouti
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

6535.0 kHz H05 HFDL Auckland Air, New Zealand, + flight ANZ174 + CPA111

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands
TSS = Traffic Separation Scheme

8696.0 kHz CBM Magallanes Radio, Chile

490.0 kHz Santa Marta Radio, Colombia

518.0 kHz Buenaventura Radio, Colombia

518.0 kHz CBM Magallanes Radio, Chile

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina
L4P = Argentinian Coast Guard Caleta Cordoba

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

8894.0 kHz H11 HFDL Panama City Air, Panama, + flight AV0235 + M73926

8834.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft A6-ATF + ET-AVC + G-VFAN
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format

MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit
RTR = Ready To Receive

8834.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft D-AXGF + ES-SAB + 5Y-CYE + flight KQA271
CFB = Centralized Fault Book
DT = Destination, followed by the runway number
FCN = FANS Completion Notification (FANS = Future Air Navigation System)
FN = Flight Number
LRU = Line Replaceable Unit
TS = Time Stamp
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + flight KNE509 + KQA271

518.0 kHz UIB Magadan Radio FE, Russian Federation

6349.8 kHz FUE French Navy Brest, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz UCV Okhotsk Radio FE, Russian Federation

8439.0 kHz PBB Dutch Navy Den Helder, Netherlands

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft F-HTYR + JY-AYV + 9V-SGA + 9XR-WG + flight KNE220
DT = Destination, followed by the runway number
FN = Flight Number
REQPRG = Request Flight Progress Report
• Engine Cruise Report HECA - OJAI ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

8106.9 kHz SWA28 Athens Meteo, Greece

3881.0 kHz FAV22 French Army Mont-Valerien, France

490.0 kHz TFX Siglufjördur Radio, Iceland
Saudanes is the name of the lighthouse in that fjord ...
Landhelgisgaeslan = Coast Guard
Siglingavidvorun = Navigational Warning

518.0 kHz XYM Myeik Radio, Myanmar
ZWP = Zawtika Well Pipeline

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

21949.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft A6-AEI + SU-GEF + 4R-EXS + flight KNE220 + RAM208
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CFB = Centralized Fault Book
REQPWI = Predicted Wind Request for FL 340 320 300 280
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

5156.8 kHz TBB Turkish Navy Ankara, Turkey
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz SUH Alexandria Radio, Egypt
BA = British Admiralty
EAFMS = Egyptian Authority for Maritime Safety
This is the former PLA (Ports and Lighthouses Administration) ...
IEOC = International Egyptian Oil Company
SAIPEM = Societa Anonima Italiana Perforazioni e Montaggi (Italy)

2628.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure

Strong solar activity allows excellent HF reception on 22 MHz and higher
This sonagram of 28 December 2022 shows perfect HFDL signals
on 21931 kHz (Muan Air, South Korea)
21934 kHz (San Francisco Air CA, United States of America)
and 21937 kHz (Hoolehua Air, Molokai, Hawaii)

16953.3 kHz 6WW French Navy Dakar, Senegal

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVC + RA73673
ADR = Air Data Reference
CFB = Centralized Fault Book
WN = Warning Number, followed by the Date-Time Group
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

Codes of ACARS Message Labels can be found here

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + flight AVA249 + IBE683

6030.0 kHz China National Radio DRM transmission
decoded with the Kiwi-SDR extension feature

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

12386.0 kHz Digital data station, Japan
32 channels + continuous pilot tone on the left ...

16067.7 kHz Ministry of Foreign Affairs Cairo, Egypt
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

16023.7 kHz Egyptian Embassy Washington DC, United States of America, to Ministry of Foreign Affairs Cairo, Egypt

7778.7 kHz 44406 Egyptian Embassy Delhi, India, to 99904 Ministry of Foreign Affairs Cairo, Egypt

State-of-the-art digital data signals have been tested since 2013
by innovative broadcast stations such as the Voice of America ...
Here's a 6067.1 kHz MFSK-16 emission on the lower sideband
of AM station Channel 292 transmitting both sidebands
2900 Hz from the carrier frequency 6070.0 kHz
New 202^3 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2024 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

6095.0 kHz Broadcast (!) radio station KBC, Netherlands via Germany
testing state-of-the-art digital data signals
such as parallel MFSK emissions on 6093.5 and 6096.5 kHz
i.e. on both sidebands 1500 Hz from the carrier frequency 6095.0 kHz
New 2023 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

18529.5 kHz 7RV50 Algerian Embassy Moscow, Russian Federation, to 7RQ20 Ministry of Foreign Affairs El Djaza'ir, Algeria

18063.3 kHz RC2JAL International Committee of the Red Cross Jalalabad, Afghanistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2KAB International Committee of the Red Cross Kabul, Afghanistan

13973.0 kHz RC2PES International Committee of the Red Cross Peshawar, Pakistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2MAZ International Committee of the Red Cross Mazar-e Sherif, Afghanistan

More than 26,000 (twenty six thousand!) fascinating screenshots are available on our unique Digital Data Decoder Screenshots USB Stick!