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!


Open-Source Intelligence at its best - here it's Open Signals Intelligence ...
Since the start of Putin's war against Ukraine
on 24 FEB 2022, most of those hundreds of aircraft
operated by airlines - such as Aeroflot - in the Russian Federation
and leased from e.g. "offshore" companies elsewhere
and registered in e.g. Bermuda as VP-ABC or VQ-XYZ for tax avoidance
have been "re-registered" (read: seized) under the new callsign series RA73...
These callsigns have never been monitored before!
RA73678 is yet another "re-registered" (read: seized) Airbus A319-111 aircraft
leased from GECAS = General Electric Capital Aviation Services in Stamford CT, USA
and originally registered as VP-BWK in Bermuda ...
Aurora Airlines (based at UHSS = Yuzhno-Sakhalinsk) flight HZ5641:
enroute UNKL - UHHH communication media advisory message ...
Apart from perfectly decoding ADS-C and CPDLC messages such as Basic Reports,
the superb go2MONITOR's Result Viewer displays meta-data
such as sender and recipient identifications extracted from decoder result files
here selected from the 1 FEB to 2 MAR 2023 time range

518.0 kHz VAJ Canadian Coast Guard Prince Rupert BC, Canada
Haida Gwaii = ex Queen Charlotte Islands

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

518.0 kHz Don Sak Radio, Thailand
BKK = Bangkok
005671000 is the station's MMSI (Maritime Mobile Service Identity) code
See 5 AUG 2021 NAVTEX Panel Report

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
TSS = Traffic Separation Scheme

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Warnings still in force - received 221510Z MAR 2023!

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-328W + B-2420 + B-6511 + B-18901 + EI-MAA + JA205P + JA893A + JA894A + JA896A + N572FE + N858FD + RPC8619 + flight CES631
Flight parameters and enroute weather ZLXY - ZBAD ...
ZFW + TOF = TOW - TIF = LAW
AGM = Miscellaneous Air/Ground Message
AI = Arrival Information
DFB = Digital Flight Book
DFD = Digital Flight Data
DOI = Dry Operating Index
DI = Departure Information
GC = Ground Connections
OMC = Operation Management Center
SCV = Surge Control Valve
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

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 ...
Click to enlarge!

4209.5 kHz XVN Nha Trang Radio, Viet Nam

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-30CL + B-5830 + HL7610 + N858FD + N870FD + N896FD + flight AS0858
GOCC = Global Operations Control Center
WC = Weather Center
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8569.8 kHz FUV French Navy Jibuti, Djibouti

518.0 kHz ESA Tallinn Radio, Estonia
PET = Saint Petersburg

518.0 kHz GCC Cullercoats Radio, United Kingdom

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

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

21928.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-ETI + B-6100 + B-18902 + JA205P + N848FD + flight CES996
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LGTP = Light Plus Turbulence = relatively greater intensity
TI2 = Terminal Information Request
VSC = Vacuum System Controller
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

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

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-FIUF + C-FNNQ + N512DN + N624UP + N854FD + XA-VSF + 9V-SGC + flight FX0014
Fuel calculation MMUN - CYYZ ...
AFOB = Actual FOB
CFD = Centralized Fault Display
ECS = Environmental Control System
EFOB = Estimated FOB
FOD = Fuel Over Destination
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
FRP = Facilities Response
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A6-BLS + N590FE + RA73168 + RA73763 + RA73807 + SU-GEB + SU-GEK + flight DAH501
AFS = Auto Flight System
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
ECAM = Electronic Centralized Aircraft Monitoring
EIS = Electronic Instrument System
EMR = Electromagnetic Reliability (of Avionics)
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GPWC = Ground Proximity Warning Computer
IR = Inertial Reference
ISIS = Integrated Standby Instrument System
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
MDPWI = Meteorological Data - Predicted Wind for FL 390
MMR = Multi-Mode Receiver
MX = Maintenance
PCU = Power Control Unit
REQPWI = Predicted Wind Request for FL 390
SFCC = Slat Flap Control Computer
WAI = Wing Anti Ice
WN = Warning Number, followed by the Date-Time Group

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft RA73228 + RA73762 + RA73824 + SU-GEK + T7-MRF + UK32102 + 5Y-CYD + flight QR0639
Date should read MAR18 instead of "MAR08" -
see go2MONITOR's Result Viewer time stamp ...
CFB = Centralized Fault Book
DFB = Digital Flight Book
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report UTDD - UIII ...
= 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 ...

6349.8 kHz FUE French Navy Brest, France
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-EUS + EC-NCK + flight VOI104
EC-NCK is a daily shuttle service NZAA - YPPH - NZAA
by Wamos Air on wet lease for Air New Zealand ...
• 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 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-CWY + YV3535 + flight AFR682
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 Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N622UP + OH-LWN + PR-TYO + XA-VAM + flight TAI366
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft XA-VSG + flight AMX022
DT = Destination, followed by the runway number
FN = Flight Number
TS = Time Stamp
• Engine Cruise Report MMCS - MMUN ...
= 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

4209.5 kHz XVG Hai Phong Radio, Viet Nam

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-18905 + JA15KZ + N616UP + N622UP + OH-LWR + OH-LWS + XA-VSF + flight CSZ952
CFD = Centralized Fault Display
ECS = Environmental Control System
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
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The 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
HB = Humboldt Bay
LA = Los Angeles
LB = Long Beach
SD = San Diego
SF = San Francisco

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-LXE + G-VJAM + N109FE + RA73294 + RA73304 + flight AFR276 + RZO266
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System

16559.0 kHz XSG Shanghai Radio, China

16559.0 kHz XSG Shanghai Radio, China

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

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

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft EI-KGH + HZ-SKY1 + JY-AYP + OH-LWR + 9V-SGA + flight FIN141
AFMS = Aircraft Fuel Management System
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FSM = Flight System Message
PSCU = Proximity Switch Control Unit
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-XWA + C-FIUV + SU-GDD + 9V-SGA + flight FIN144
DFR = Daily Flight Report
PSH = Pushback Time
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-BGM + HL7792 + N614UP + PR-TYQ + PR-TYV + PR-YYF + flight FX0040
CAS = Computed Air Speed
CG = Center of Gravity
DFB = Digital Flight Book
OQ = Oil Quantity
RSCD = Runway Surface Condition
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

12579.0 kHz UAT Moscow Radio, Russian Federation
FSUE = Federal State Unitary Enterprise

12579.0 kHz UAT Moscow Radio, Russian Federation

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PK-GMO + flight AVA115
This is Flybondi's Boeing 737-800
registered in JAN 2023 as LV-KEF
and entered into service in FEB 2023,
leased from Pembroke in Dublin, Ireland
However, the avionics continues to transmit
its original Garuda callsign in downlink messages ...
DFB = Digital Flight Book

518.0 kHz Muttam Point Radio, India
INW = Indian Navigational Warning

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N606UP + N941AK + flight AS0449
Flight parameters and enroute weather KSEA - PHNL ...
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft A6-BLO + B-30EK + B-6333 + B-6942 + JA205P + HL7642 + RA73673 + RPC8783 + flight QTR7P
AFS = Auto Flight System
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
FAC = Flight Augmentation Computer
FLR = Failure
FMGC = Flight Management and Guidance Computer
FR = Fault Report, followed by the Date-Time Group
LGTP = Light Plus Turbulence = relatively greater intensity
OCC = Operations Control Centre
REQPWI = Predicted Wind Request for FL 410 370 330 290
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
TI2 = Terminal Information Request
VSC = Vacuum System Controller
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

22376.0 kHz NRV United States Coast Guard Apra Harbour, Guam
ZAN since 2016! Reactivated?

17916.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-300A + N883FD + RA73169 + RA73788 + flight CAL058
Increasing solar activity - and the ionosphere going totally crazy:
Cruise data and POSREP downlink
from a LTFM - UUEE regional hop across the Black Sea... via Auckland!
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report LTFM - UUEE ...
= 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

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

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-GUBT + CS-TOO + G-VLUV + N292NV + N618UP + XA-ADD + XA-VBW + flight G40961
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PDU = Pilot Display Unit
REQPWI = Predicted Wind Request for FL 410 390 360
REQPWI = Predicted Wind Request for FL 410 390 350
TI2 = Terminal Information Request
VSC = Vacuum System Controller
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska
BNM = Broadcast Notice to Mariners
POC = Point of Contact

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-EEU + G-VLUV + N101FE + N608UP + N618UP + 5Y-KYF + 9V-SCK + flight CCA137
Increasing solar activity - and the ionosphere going totally crazy:
METAR uplink for a HKJK - FAOR regional hop ... via Guam!
AA = Arrival Airport
CFD = Centralized Fault Display
DA = Departure Airport
DFD = Digital Flight Data
FPN = Flight Plan Report downlink
MCC = Maintenance Control Centre
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz EQI Abbas Radio, Iran

518.0 kHz A9M Hamala Radio, Bahrain
BA = British Admiralty
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-20C6 + B-30ET + B-324A + B-2411 + HL7640 + PK-GMM + PK-SJH + PK-SJZ + flight HVN771
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
DT = Destination, followed by the runway number
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FN = Flight Number
OCC = Operations Control Centre
PD = Profile Descent
TS = Time Stamp
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30C8 + B-307J + B-324A + B-2290 + B-2413 + B-5621 + JA878A + flight SIA216
Flight parameters and enroute weather ZUCK - ZBAD ...
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
NWS = Nose Wheel Steering
PDC = Pre-Departure Clearance
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
The date reads 5 3 13 = 2023 March 13
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-303E + B-2096 + B-18916 + EI-KGA + JA805A + JA822A + 9M-MAC + flight CES668
Flight parameters and enroute weather ZSPD - RPLL ...
AGM = Miscellaneous Air/Ground Message
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

5195.0 kHz DRA5 Kiel, Germany

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-BLS + A6-EUL + A6-EVK + B-8743 + JA902A + N871FD + PK-SJL + VN-A889 + VT-IAX + 9V-SMZ + flight CSZ991
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
TI2 = Terminal Information Request
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

4209.5 kHz XVN Nha Trang Radio, Viet Nam

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-306D + B-6006 + B-8491 + N613UP + N618FE + flight CCA268
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
REQPWI = Predicted Wind Request for FL 311
TI2 = Terminal Information Request
• Engine Cruise Report ZUGY - ZSNJ ...
= 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 ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

4209.5 kHz XVN Nha Trang Radio, Viet Nam

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment ...
The date reads 5 3 12 = 2023 March 12
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 CC-CXK + C-FRAM + HL7610 + HL7632 + XA-VSF + flight GTI864
• 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft HL7630 + HL7632 + HP-3510 + N132FE + N356KD + XA-VSG + flight UAL2
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
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

490.0 kHz IGS Piombino Radio, Italy

490.0 kHz Hamburg Meteo, Germany
NCC = National Co-Ordination Centre
VTG = Verkehrstrennungsgebiet

490.0 kHz OST Oostende Radio, Belgium

21934.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft CC-CXH + HL7632 + HP1523 + N297FE + N964AM + XA-VAM + XA-VSG + flight AS0368
DT = Destination, followed by the runway number
FN = Flight Number
• Engine Cruise Report MMOX - MMSM ...
= 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 ...
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

490.0 kHz SVL Limnos Radio, Greece

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft EI-KDE + EI-KGG + JA208P + N612UP + RPC8398 + 9V-SHV + flight APJ483
AGM = Miscellaneous Air/Ground Message
ITC = Inter-Tropical Convergence
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 Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-304E + B-307Y + B-322X + N611UP + N876FD + RA73231 + flight CES551
Increasing solar activity - and the ionosphere going totally crazy:
ETA and flight summary downlink from a UMKK - UUEE
domestic hop across the Baltic Sea ... via Guam!
AGM = Miscellaneous Air/Ground Message
SCV = Surge Control Valve
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The 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
GK2A = GEO KOMP Sat 2A = Geostationary Korea Multi Purpose Satellite

9165.0 kHz HLL Soul Meteo, South Korea

13570.0 kHz HLL Soul Meteo, South Korea

13570.0 kHz HLL Soul Meteo, South Korea
DFS = Digital Forecast System

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft JA222A + JA827A + JA886A + N107FE + N611UP + flight CPA308
AGM = Miscellaneous Air/Ground Message
GOCC = Global Operations Control Center
LM = Light Minus Turbulence = relatively weaker intensity
LP = Light Plus Turbulence = relatively greater intensity
PMS = Pavement Management System
SR = Sunrise
SS = Sunset
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz CBV Valparaiso Radio, Chile
R/V = Research Vessel

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina
L4O = Argentinian Coast Guard Caleta Olivia

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-6045 + B-8891 + B-18915 + HL7736 + JA897A + N607UP + 9V-SHB + flight HKC372
Does Chinese ATC think these pilots are idiots?!
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
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
• 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft A6-EED + F-UJCS + HL7792 + JA937A + N120FE + flight QTR24C
Increasing solar activity - and the ionosphere going totally crazy:
LIDO weather uplink for a OMDB - LEMD flight ... via Auckland!
DFD = Digital Flight Data
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

518.0 kHz VCO Canadian Coast Guard Port Caledonia NS, Canada

518.0 kHz OXF Simiutaq Radio, Greenland
DMI = Danish Meteorological Institute
Warnings still in force - received 091000Z MAR 2023!

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft UK32020 + flight FBU720 + KNE038
ZFW + TOF = TOW - TIF = LAW
BI = Basic Index
DHC = Dead Head Crew
DOI = Dry Operating Index
DOW = Dry Operating Weight
LILAW = Loaded Index at LAW
LITOW = Loaded Index at TOW
LIZFW = Loaded Index at ZFW
LWMAC = Landing Weight Mean Aerodynamic Chord
SI = Supplementary Information
TOMAC = Take-Off Mean Aerodynamic Chord
ZFMAC = Zero Fuel Mean Aerodynamic Chord

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-NMJ + ES-SAZ + ET-ATL + ET-AUB + JY-AYP + N608UP + N628UP + OE-LZC + SU-GEI + SU-GEJ + flight ALK229
ADIRU = Air Data Inertial Reference Unit
CFB = Centralized Fault Book
CFD = Centralized Fault Display
DME = Distance Measuring Equipment
ECS = Environmental Control System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
LGCIU = Landing Gear Control Interface Unit
WXR = Weather Radar
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
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

20640.0 kHz Digital data station

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Maritime safety information for NAVAREAs 10/11 ...
The date reads 5 3 8 = 2023 March 8
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-CXC + PR-TYN + ZS-SXM + flight LAN501
Code figures for SBBR runways braking action - see e.g. here
AMDAR = Aircraft Meteorological Data Relay DGAA - FAOR
HIRO = High Intensity Runway Operation
REQPWI = Predicted Wind Request for FL 390 370 350 330
RSCD = Runway Surface Condition
TI2 = Terminal Information Request

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft ET-ASH + PR-TYS + PR-TYV + PR-YYJ + PS-GPE + 9V-SKY + flight UAL187
Parameters ...
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
DT = Destination, followed by the runway number
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FN = Flight Number
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
PER = Performance Report
TCM = Teledyne Continental Motor
TS = Time Stamp
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
FRP = Facilities Response
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

4209.5 kHz XVN Nha Trang Radio, Viet Nam

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N573FE + XA-VRY + flight UAL2
AGM = Miscellaneous Air/Ground Message
DA = Departure Airport
DFD = Digital Flight Data
DS = Destination Airport
GOCC = Global Operations Control Center
LLD = Large Lateral Deviation = 10 NM or more without ATC approval
RDA = Radar Data Acquisition

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N573FE + N616UP + XA-VSF + flight KAL017
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
DA = Departure Airport
DS = Destination Airport
DT = Destination, followed by the runway number
FN = Flight Number
GOCC = Global Operations Control Center
MOCC = Meteorological Operations Control Center
TS = Time Stamp
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
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft EI-KGD + JY-AYP + N120FE + PR-TYV + RA73228 + 9V-SKY + flight CPA731
C/B = Circuit Board
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
FDIMU =Flight Data Interface Management Unit
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 340 320
WN = Warning Number, followed by the Date-Time Group
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz LGQ Rogaland Radio, Norway

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft A6-EIV + HZ-NS46 + N612FE + RA73761 + RPC8789 + 5Y-CYB + 9V-SHE + 9V-SME + flight ACA039
Increasing solar activity - and the ionosphere going totally crazy:
POSREP downlink from a HKJK - VABB Indian Ocean flight ... via Auckland!
CFB = Centralized Fault Book
DFD = Digital Flight Data
WN = Warning Number, followed by the Date-Time Group
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 airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• 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 the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz Sandakan Radio, Sabah, Malaysia
GK = Gumusut-Kakap Oil Field
OBN = Ocean Bottom Node
ROV = Remotely Operated Vehicle
Warnings still in force - received 061900Z MAR 2023

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!!!

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GTSZ + C-GUBT + N964AM + flight AVA068
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
DB = Data Base
DCA = Data Communication Architecture
EEC = Electronic Engine Controller
EOR = End of Report
FDE = Fault Detection and Exclusion
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FRC = Fuel Ratio Control
OBRM = On Board Replaceable Module
PSCU = Proximity Switch Control Unit
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
FRP = Facilities Response
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz XSX Chi-Lung Radio, Taiwan (Democratic Republic of China)

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-6523 + HL8258 + JA16KZ + JA823A + N580UP + flight SIA33
ZSSS - ZUUU cruise parameters ...
CFD = Centralized Fault Display
ECS = Environmental Control System
TI2 = Terminal Information Request
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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft HL8286 + JA212A + JA876A + JA933A + 7O-AFB + 9M-XBF + flight CCA856
Perfect OOOI ...
DFB = Digital Flight Book
HNDMAT = Haneda Meteorological Advice Team
TI2 = Terminal Information Request

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-LQE + HL7210 + N621UP + N626UP + RPC8611 + RPC8613 + flight CES586
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
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
JMA = Japan Meteorological Agency
PER = Performance Report
TS = Time Stamp
VA = Volcanic Ash

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-30DA + EI-KGA + ET-ASG + JY-AYU + N618UP + N622UP + flight CES967
Increasing solar activity - and the ionosphere going totally crazy:
FR downlink from a EHAM - OJAI flight ... via Guam!
AGM = Miscellaneous Air/Ground Message
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
RESPWI/RJ = FMS downlink rejection of PWI = Predicted Wind uplink data (tentative)
VDR = VHF Data Radio
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-322U + B-324H + B-6712 + B-8861 + JA811A + RA73677 + RPC8789 + flight CES548
ZGGG - ZSNB cruise parameters ...
CFB = Centralized Fault Book
CFD = Centralized Fault Data
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
FR = Fault Report, followed by the Date-Time Group
RA = Radio Altimeter
TOC = Top of Climb
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report ZYHB - ZHCC ...
= 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 ...
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft G-VLDY + SU-GEL + flight ETH908
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
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft G-VLDY + HZ-NS29 + JY-BAG + N605UP + SU-GEL + SU-GEM + TC-LGI + 5Y-CYC + 9K-APG + flight KQA100
PSH = Pushback Time
• 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 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft HP1523 + PR-YYI + PR-YYK + flight AZU296
RAIM = Receiver Autonomous Integrity Monitoring
A RAIM prediction ensures that available GNSS signals
meet the integrity for a given phase of flight
RNP = Required Navigation Performance
• Engine Cruise Report SBKP - SBGO ...
= 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 ...

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PK-GMO + PR-TYK + PR-YYI + flight AEA176 + AVA983
DT = Destination, followed by the runway number
FN = Flight Number
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

3585.0 kHz HLL8 Soul Meteo, South Korea
DFS = Digital Forecast System

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A7-AMJ + HZ-NS23 + JA897A + N106FE + VN-A596 + 9M-XBE + 9V-SHN + 9V-SHV + flight AAR601
ADIRU = Air Data Inertial Reference Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DA = Departure Airport
DFD = Digital Flight Data
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
TPIS = Tire Pressure Indicator System
WXR = Weather Radar
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

17916.0 kHz H05 HFDL Auckland Air, New Zealand, + flight QTR62R

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft HL7636 + flight UAE5RQ
AGM = Miscellaneous Air/Ground Message
LAHSO = Land And Hold Short Operations
OCC = Operations Control Centre
PETC = Pet in Cabin
S/N = Seat Number
TI2 = Terminal Information Request

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-XWA + D-AXGF + EC-NGT + N128AM + N613UP + 9V-SGB + flight QTR62R
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
FCA = Facilities Contact Advisory
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
• 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-GUBT + HL7642 + N849FD + 9V-SGB + flight ACA784
CFB = Centralized Fault Book
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
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 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

16898.5 kHz XSG Shanghai Radio, China
Presumably local time used here since received (beyond schedule ...) at 0850 UTC ...

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EI-KGJ + HZ-NS43 + JY-AYV + N109FE + RA73294 + RA73757 + RA73773 + UK32017 + VT-NAC + flight PGT8T
ZFW + TOF = TOW - TIF = LAW
DFD = Digital Flight Data
MDPWI = Meteorological Data - Predicted Wind for FL 300
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft C-GOIE + C-RGI + TC-MCZ + flight THY3RU
Code figures for GMMN runways braking action - see e.g. here
MTW = Mountain Wave
TI2 = Terminal Information Request
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-AEJ + HS-XTH + JA879A + N513DZ + PK-GNC + PK-GNM + VT-IFK + 9V-SHY + 9V-SMQ + flight SQ355 + UAE1QH
AA = Arrival Airport
AFS = Auto Flight System
DA = Departure Airport
DT = Destination, followed by the runway number
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-30D0 + HL7640 + HS-XTG + HS-XTH + 9V-SCJ + 9V-SHA + 9V-SMN + 9V-SMU + flight CSZ896
CFB = Centralized Fault Book
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-309C + N605UP + flight CSC318
DT = Destination, followed by the runway number
FN = Flight Number
TI2 = Terminal Information Request
TS = Time Stamp
• Engine Cruise Report ZUCK - ZSJY ...
= 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 messages are not table-formatted as in the example below;
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

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

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

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

11030.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure
RSMC = Regional Specialized Meteorological Centre

11030.0 kHz VMC Charleville Meteo QLD, Australia

16806.5 kHz NMF United States Coast Guard Boston MA, United States of America

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-ROJ + F-HTYR + N584FE + SU-GEB + 9V-SMC + flight LH009Z
VABFUBL should be written VABF UBL = VABF FIR Sector UBL
AGM = Miscellaneous Air/Ground Message
BSR = Bon Soir
CCO = Operations Control Centre
CDB = Commandant Du Bord
CFD = Centralized Fault Display
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
• 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

17016.8 kHz KPH San Francisco Radio CA, United States of America
MEBA = Marine Engineer's Beneficial Association

17985.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-BMF + B-308L + EI-KGF + HZ-AQL + JY-AYN + SU-GCH + 5A-LAK + flight LO6252
Increasing solar activity - and the ionosphere going totally crazy:
Cruise data downlink from a OEAB - OERK domestic hop ... via Reykjavik!
Increasing solar activity - and the ionosphere going totally crazy:
POSREP and L/R engine data downlink from a WIII - OMAA flight ... via Reykjavik!
CFB = Centralized Fault Book
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
• Engine Cruise Report OEAB - OERK ...
= 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 PKX Jakarta Radio, Indonesia

17916.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-6009 + CC-BBJ + JA11KZ + JA207P + N633UP + PK-SAZ + flight SU1314
AGM = Miscellaneous Air/Ground Message
CG = Center of Gravity
CI = Consistency Index
FEL = Fuel Estimation Left
FER = Fuel Estimation Right
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
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

5807.0 kHz ZKLF Auckland Meteo, New Zealand

518.0 kHz JGC Yokohama Radio, Japan

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

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N573DZ + XA-VRX + XA-VSF + 9V-SJB + flight AS0082
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz UCV Okhotsk Radio FE, Russian Federation

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A7-BGA + G-VINE + G-VRAY + HZ-NS48 + JY-AYS + 5Y-CYC + flight RJA741
AA = Arrival Airport
DA = Departure Airport
FPN = Flight Plan Report downlink
REQPWI = Predicted Wind Request for FL 410 390 360
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink

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

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft G-VJAZ + HC-CTX + N939AV + PR-YYK + XA-AMR + flight LAN116
AFS = Auto Flight System
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
CSAS = Conditioned Service Air System
DA = Departure Airport
DEU = Decoder-Encoder Unit
DM = Time Stamp
DS = Destination Airport
DT = Destination, followed by the runway number
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
FTIS = Fuel Tank Inerting System
NAI = Nacelle Anti-Ice
PRSOV = Pressure Regulating and Shut Off Valve
SCM = SATCOM Configuration Module
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report EGLL - KBOS ...
= 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 ...
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 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

21934.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-GUBL + JA819P + N575DZ + XA-VRX + flight ACA932
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
FLR = Failure
FMC = Flight Management Computer
FMS = Flight Management System
FR = Fault Report, followed by the Date-Time Group
VSC = Vacuum System Controller
VC = Ventilation Controller
WN = Warning Number, followed by the Date-Time Group

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EIU + EC-NUI + N855FD + RA73749 + SU-GCM + SU-GEM + UK67004 + flight RJA641
MDPWI = Meteorological Data - Predicted Wind for FL 280
REQPWI = Predicted Wind Request for FL 300
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8439.0 kHz PBB Dutch Navy Den Helder, Netherlands

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-XWC + B-1062 + EI-MAE + N855FD + N864FD + N873FD + OD-MRS + flight FDX2
CFB = Centralized Fault Book
CFD = Centralized Fault Display
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GLS = GBAS (Ground-Based Augmentation System) Landing System
IR = Inertial Reference
MMR = Multi-Mode Receiver
WN = Warning Number, followed by the Date-Time Group
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Latest tuna market prices ...
The date reads 5 2 23 = 2023 February 23
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RAM + ET-AOV + flight OCN68
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

4210.5 kHz XSQ Guangzhou Radio, China
Presumably local time used here since received (beyond schedule ...) at 1450 UTC ...

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N519DN + N521FE + N572DZ + N584FE + N614UP + N847FD + N865FD + flight DAL276
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Display
DFD = Digital Flight Data
ECS = Environmental Control System
FOD = Fuel Over Destination
GOCC = Global Operations Control Center
LMTOGW = Limiting Maximum Operational Take-Off Gross Weight
MFWF = Minimum Flight Weight Fuel
RPF = Reliability Protection Fuel
SCV = Surge Control Valve
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft JA13KZ + N5179A + 9V-SGC + 9V-SMJ + flight AAR202
CFD = Centralized Fault Display
MDT = Moderate
WSI = Weather Services International
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

518.0 kHz Vakalpudi Radio, India
CWC = Cyclone Warning Centre
IMD = India Meteorological Department
MMB = Maharashtra Maritime Board

518.0 kHz 9VG Singapore Radio, Singapore
SPOCC = Singapore Port Operations Control Centre
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 ...
TSS = Traffic Separation Scheme

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

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
The date reads 5 2 21 = 2023 February 21
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B209X + B-1293 + HL8500 + F-WTAQ + N580UP + N845FD + RPC8783 + 9V-SMC + flight ANZ173 + QH1628
Most probably an Airbus A350-941 delivery flight LFBT - OMAA ...
LFBT is a French "storage" airport used by Tarmac Aerosave for on-order Airbus aircraft ...
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 Display
DT = Destination, followed by the runway number
ECS = Environmental Control System
FN = Flight Number
POX = Position Report
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 airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
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

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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-AEH + B-LIF + B-18666 + PK-SAZ + PK-SJU + 9V-SKM + flight CSC809
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DMC = Display Management Computer
DU = Display Unit
EIS = Electronic Instrument System
FR = Fault Report, followed by the Date-Time Group
MDDU = Multipurpose Disk Drive Unit
SD = System Display
TPEOD = Taipei Operational Department
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
• Engine Cruise Reports OMAA - VOHS + WIMM - WIII + WIII - WADL ...
= 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 messages are not table-formatted as in the example below;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
• 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8113.5 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation

7646.0 kHz DDH7 Hamburg Meteo, Germany

17916.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-307J + B-2410 + HL7740 + HL8286 + JA10VA + JA204P + JA824A + 9V-SHY + flight CES561
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
CFB = Centralized Fault Book
FDU = Fire Detection Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LGTP = Light Plus Turbulence = relatively greater intensity
WN = Warning Number, followed by the Date-Time Group
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8665.0 kHz XSG Shanghai Radio, China

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft OY-KAL + RA73131 + RA73231 + flight UAE79Y
Perfect OOOI ...
BC = Baggage Claim
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = 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

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

13033.0 kHz FUF French Navy Fort de France, Martinique

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft HL7636 + JA17KZ + JA382A + JA873A + N624UP + N631UP + N860FD + OH-LWB + 9V-SGD + 9V-SJA + flight FDX390
Cruise data RJAA - PHNL ...
The message ends with No stable frame since no stability is detected
CFD = Centralized Fault Display
DFD = Digital Flight Data
ECS = Environmental Control System
FWS = Flight Warning System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCP = Facilities Contact 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
• 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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13570.0 kHz HLL Soul Meteo, South Korea

518.0 kHz JNR Moji Radio, Japan

518.0 kHz UIB Magadan Radio FE, Russian Federation

518.0 kHz UFO Kholmsk Radio FE, Russian Federation

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

518.0 kHz EAL Las Palmas Radio, Canary Islands

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-325M + B-5849 + B-18902 + N622UP + PK-SJJ + 9V-SCA + flight YG9009
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
L/G = Landing Gear
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina
VTS = Vessel Traffic Service

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

518.0 kHz 4XO Haifa Radio, Israel
IMOT = Israel Ministry of Tourism

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

518.0 kHz 9HD Valetta Radio, Malta
VTS = Vessel Traffic Service

518.0 kHz 5BA Nicosia Radio, Cyprus
JRCC = Joint Rescue Coordination Centre

518.0 kHz TAH Istanbul Radio, Turkey

518.0 kHz SUZ Serapeum Radio, Egypt
ADES = Advanced Drilling Systems
BA = British Admiralty

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

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

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A4O-DB + ET-ASH + LV-KAO + N597FE + N610UP + N612FE + N624UP + N846FD + flight AMX002
CFB = Centralized Fault Book
CFD = Centralized Fault Display
DFD = Digital Flight Data
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + flight BBC347 + FIN141

518.0 kHz Veraval Radio, India
IMD = India Meteorological Department

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz XVT Da Nang Radio, Viet Nam

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-1297 + N867FD + flight CPA829
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Display
FOD = Fuel Over Destination
LMTOGW = Limiting Maximum Operational Take-Off Gross Weight
GOCC = Global Operations Control Center
MFWF = Minimum Flight Weight Fuel
RPF = Reliability Protection Fuel

10805.8 kHz Digital data station

4209.5 kHz TAH Istanbul Radio, Turkey

4209.5 kHz TAH Istanbul Radio, Turkey

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan
The third frame shows the news broadcast schedule in JST = Japan Standard Time

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft B-2091 + CN-RGC + PR-TYQ + XA-VSG + flight AS0356
Code figures for SBBR runways braking action - see e.g. here
CFB = Centralized Fault Book
RSCD = Runway Surface Condition
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 CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30AE + B-305K + B-6325 + B-6385 + RPC8764 + flight QTR4L
Message A9 is incomplete ...
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MCDU = Multi-Function Control Display Unit
MMR = Multi-Mode Receiver
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

3585.0 kHz HLL8 Soul Meteo, South Korea

518.0 kHz NMO United States Coast Guard Honolulu, Hawaii
BNM = Broadcast Notice to Mariners
LB = Lighted Buoy
LLNR = Light List Number
LT = Light
POC = Point Of Contact

518.0 kHz Fuzhou Radio, China

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30C1 + B-6331 + F-HRBJ + PK-BGO + VN-A899 + 9M-MAG + 9V-SHT + flight CCA450
PACD is an ETOPS emergency alternate airport for trans-Pacific flights ...
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
EDP = Engine Display Panel
FWS = Flight Warning System
OCC = Operations Control Centre
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-BGL + CC-CWY + EC-NBN + F-HREV + N120FE + N593FE + N859GT + N29984 + PR-YYD + flight DAL41
CFB = Centralized Fault Book
DFD = Digital Flight Data
ECS = Environmental Control System
EMR = Electromagnetic Reliability (of Avionics)
MX = Maintenance
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

490.0 kHz UUI Odessa Radio, Ukraine
Warnings still in force - received 050230Z FEB 2023

490.0 kHz 9AS Split Radio, Croatia

490.0 kHz Antalya Radio, Turkey

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 5 2 3 = 2023 February 3
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

518.0 kHz HZH Jeddah Radio, Saudi Arabia

518.0 kHz United States Coast Guard Savannah GA, United States of America
BNM = Broadcast Notice to Mariners

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-RGF + G-VLDY + JA12KZ + RA73229 + RA73232 + RA73735 + RA73748 + RA73749 + TC-MCN + flight UAE17
AFS = Auto Flight System
AGM = Miscellaneous Air/Ground Message
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFD = Centralized Fault Display
CFDS = Centralized Fault Display System
FLR = Failure
FMGC = Flight Management and Guidance Computer
FR = Fault Report, followed by the Date-Time Group
WN = Warning Number, followed by the Date-Time Group

518.0 kHz NMQ United States Coast Guard Long Beach CA, United States of America
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach
SD = San Diego
SF = San Francisco

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 5 1 31 = 2023 January 31
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-327T + B-328M + B-2415 + B-5850 + B-6012 + B-6335 + B-8337 + 9V-SHA + flight CCA423
AGM = Miscellaneous Air/Ground Message
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8424.0 kHz SVO Olympia Radio, Athens, Greece

11030.0 kHz VMC Charleville Meteo QLD, Australia

8106.9 kHz SWA28 Athens Meteo, Greece

490.0 kHz EAR La Coruna Radio, Spain

4610.0 kHz GYA Royal Navy London, United Kingdom

3881.0 kHz FAV22 French Army Mont-Valerien, France

6220.0 kHz IDN Italian Navy Napoli, Italy
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8424.0 kHz SVO Olympia Radio, Athens, Greece

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-328P + B-8491 + B-8680 + HL8500 + JA214A + N101FE + VN-A888 + flight CSC698
AGM = Miscellaneous Air/Ground Message
DFD = Digital Flight Data
PACK = Pressurization Air Conditioning Kit
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America
NGA = National Geospatial-Intelligence Agency

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

8412.5 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

518.0 kHz EAV Valencia Radio, Spain

518.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy
VTS = Vessel Traffic Service

518.0 kHz EAC Tarifa Radio, Spain

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

490.0 kHz Grindavik Radio, Iceland
Faxafloa = Reykjavik Harbour
Landhelgisgaeslan = Coast Guard

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 Balasore Radio, India

16959.8 kHz FUJ French Navy Noumea, New Caledonia

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

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NHC = National Hurricane Center

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

3855.0 kHz DDH3 Hamburg Meteo, Germany

518.0 kHz SVK Kerkyra Radio, Greece
Message KA22 has been cancelled in the meantime ...

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

13988.5 kHz JMH4 Tokyo Meteo, Japan

518.0 kHz JNX Kushiro Radio, Japan

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

518.0 kHz LFO Oerlandet Radio, Norway

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

490.0 kHz EJM Irish Coast Guard Malin Head, Ireland

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 SUK Quseir Radio, Egypt

518.0 kHz UDN Novorossiysk Radio, Russian Federation

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)

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header
Presumably local time used here since received (beyond schedule ...) at 1650 UTC ...
According to this NAVAREA 11 document, XSG uses indeed
transmitter identification character Q on both 518 and 486 kHz

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

2628.0 kHz VMC Charleville Meteo QLD, Australia

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

2628.0 kHz VMC Charleville Meteo QLD, Australia

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

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

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

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

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)

518.0 kHz Keating Point Radio, Andaman Islands, India
INW = Indian Navigational Warning

11090.0 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone

518.0 kHz VBA Canadian Coast Guard Pass Lake ONT, Canada
The ice concentration is given in tenths
BW = Bergy Water
CONS = Consolidated
FYI = First-Year Ice
GI = Grey Ice
GWI = Grey-White Ice
IF = Ice Free
MEDI = Medium Lake Ice
MYI = Multi-Year Ice
NI = New Ice
OI = Old Ice
OW = Open Water
THI = Thin Lake Ice
TKI = Thick Lake Ice
TR = Trace Of
SYI = Second-Year Ice
VTKI = Very Thick Lake Ice

518.0 kHz VBR Canadian Coast Guard Ferndale ONT, Canada

518.0 kHz ZBM Hamilton Harbour Radio, Bermuda

9165.0 kHz HLL Soul Meteo, South Korea

16953.3 kHz 6WW French Navy Dakar, Senegal

518.0 kHz LZW Varna Radio, Bulgaria
VTS = Vessel Traffic Service

490.0 kHz CBT Talcahuano Radio, Chile

518.0 kHz Bjuroklubb Radio, Sweden

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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

4209.5 kHz SVH Iraklion Radio, Greece

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

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

4210.5 (not 4209.5!) 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

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight ANA897

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

518.0 kHz NMF United States Coast Guard Boston MA, United States of America
BNM = Broadcast Notice to Mariners

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

12695.5 kHz KFS San Francisco Radio CA, United States of America
MMP = Masters, Mates and Pilots

518.0 kHz Thailand
BKK = Bangkok
This is not HSA, but most likely one of the new NAVTEX stations
announced in the 5 AUG 2021 NAVTEX Panel Report

518.0 kHz CBP Puerto Montt Radio, Chile

490.0 kHz Sellia Marina Radio, Italy

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight FX1410

8939.0 kHz H10 HFDL Muan Air, South Korea, + flight AAR796 + CAL052

4209.5 kHz XVG Hai Phong Radio, Viet Nam

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft C-FGDX + N420LA + N608UP + N649FE + flight AC0322 + RJA272
DFD = Digital Flight Data
TI2 = Terminal Information Request
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

11354.0 kHz H09 HFDL Barrow Air, Alaska, + flight ACA850 + 7G0014

518.0 kHz NMR United States Coast Guard San Juan, Puerto Rico

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight AS0891 + AVA975

518.0 kHz XSI Sanya Radio, China

8477.3 kHz FUX French Forces Le Port de la Riviere des Galets, Reunion
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

4296.0 kHz Digital data station, Japan
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVF + EI-EJL + JA816A + flight TS0093
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
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 Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or 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

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

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

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft ZS-SXM + 3B-NCF + flight CPA252 + MAU14
ZUR = Zuidafrikaanse Radio = SAA Operations Control Jo'burg

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + flight MAS4

518.0 kHz SVH Iraklion Radio, Greece

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N741AV + PR-YYI + flight FX1283
MDPWI = Meteorological Data - Predicted Wind for FL 390 350

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

490.0 kHz GNI Niton Radio, United Kingdom

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVI + A6-EVJ + JA382A + N625UP + RA73678 + flight SIA208
Mahalo = Thank you
CFD = Centralized Fault Display
ECS = Environmental Control System
HNLOC = Honolulu Operations Control
• 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
• Code figures for EFHK runways braking action - see e.g. here
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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

10081.0 kHz H07 HFDL Shannon Air, Ireland, + flight AIC147 + CCA581

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + flight KNE111

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

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

8927.0 kHz H16 HFDL Barrigada Air, Guam, + flight ANA224 + ANA879

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + flight DAL296 + KAL017

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft CN-RGZ + JA15KZ + N605UP + N858FD + N868FD + flight TS0862
CCO = Operations Control Centre
CFD = Centralized Fault Display
TI2 = Terminal Information Request
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N126FE + N542LA + PR-YYD + XA-AMR + XA-VSF + 9V-SGA + flight AVA208
GOCC = Global Operations Control Center
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

8834.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft A6-EIS + SU-GDA + SU-GEA + SU-GEF + flight HY0278
Corrupted parsed data ...
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
SDU = Satellite Data Unit
WN = Warning Number, followed by the Date-Time Group
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

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

The codes of ACARS Message Labels can be found here

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft LV-KAN + N120FE + N576UP + XA-VSG + flight AVA023
DFB = Digital Flight Book
FSM = Flight System Message
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
• Engine Cruise Report SAEZ - KJFK ...
= 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 ...

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft CC-CWY + N873FD + XA-MFG + 9V-SMS + flight EVE858
SCV = Surge Control Valve
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

490.0 kHz Porto Santo Radio, Madeira

518.0 kHz ZSC Cape Town Radio, South Africa (Republic of)

8894.0 kHz H11 HFDL Panama City Air, Panama, + flight LAN622

518.0 kHz VCG Canadian Coast Guard Moisie QUE, Canada

19448.5 kHz Digital data station

13882.5 kHz DDK6 Hamburg Meteo, Germany

518.0 kHz JNL Otaru Radio, Japan

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

518.0 kHz LGT Tjoeme Radio, Norway

518.0 kHz IQM Mondolfo Radio, Italy

8486.3 kHz CTA Portuguese Navy Lisbon, Portugal

12668.3 kHz FUG French Navy Saissac, France

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

518.0 kHz GPK Portpatrick Radio, United Kingdom

17615.0 RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

518.0 kHz Kyaukphyu Radio, Myanmar

518.0 kHz RFA Astrakhan Radio, Russian Federation
VTS = Vessel Traffic Service

11017.7 kHz Digital data station

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CS-TKQ + EI-EJL + OY-KAM + 5-LAP + 5A-WLA + flight HY9619
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DAR = Data Access Recorder
ECAM = Electronic Centralized Aircraft Monitoring
FCOM = Flight Crew Operation Manual
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
REQPWI = Predicted Wind Request for FL 360 370 380
SGH = Stockholm Ground Handling
STOOPSK = Stockholm Operations Scandinavian Airlines
TPIS = Tire Pressure Indicator System
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 each

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

The codes of ACARS Message Labels can be found here

490.0 kHz Taganrog Radio, Russian Federation

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina
VS = Vessel Service

8424.0 kHz UDK Murmansk Radio, Russian Federation

518.0 kHz V5W Walvis Bay Radio, Namibia
LNW = Local Navigational Warning
Warnings still in force - received 202000Z FEB 2022

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

518.0 kHz Izmir Radio, Turkey
Warnings still in force - received 160520Z FEB 2022

7396.9 kHz HSW64 Bangkok Meteo, Thailand

7396.9 kHz HSW64 Bangkok Meteo, Thailand

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

518.0 kHz EJK Irish Coast Guard Valentia, Ireland

518.0 kHz UBE Petropavlovsk - Kamchatskiy Radio FE, Russian Federation
Africa Cape = Mys Afrika is ... the easternmost point of the Kamchatka Peninsula!

7657.0 kHz RDL Commonwealth of Independent States Navy Vilyeyka, Belarus

518.0 kHz Berdyans'k Radio, Ukraine

518.0 kHz Centre Regional Operationnel de Surveillance et de Sauvetage Toulon, France

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

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

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

4233.0 kHz Fully automatic frequency step mode monitoring
with continuous classification of digital data signals
on a remote receiver abroad

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 2023 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 25,000 (twenty five thousand!) fascinating screenshots are available on our unique Digital Data Decoder Screenshots USB Stick!