00 Emergency Situation Report 10 User defined messages/No header 10KL KLM ETA Report 11 Inrange Arrival report 12 ????? 13 CMU loadsheet uplink 14 General aviation free text message 15 General aviation position report 15GS Business Flight Position Report 16 General aviation weather request 16QR Qatar Airways Position Report 17 Estimated Time of Arrival report 18 General aviation weather report 19 ATIS report 1A Change in operating frequency 1B ????? 1C Flight plan request 1D ????? 1E ????? 1G ????? 1L Off message 1M Estimated Time of Arrival report 1Q ????? 1X Loss of VHF communications 20 SAS: Initialization 21 SAS: Take off data calculation 22 ????? 23 SAS: Loadsheet uplink 24 SAS: Crewlist 24NW Weather Request 25 SAS: Special load notification 26 SAS: Sigmet message 27 Weather request for SA 28 Weather request 29 SAS: Flow message 2A ????? 2B ????? 2L ????? 2P ????? 2S Weather request 2T80 CANADA 300 AIRLINES DEFINED 2T89 CANADA 300 AIRLINES DEFINED 2U Weather 30 Position report 30ME Middle Eastern Position report 31 Weather report 32 ????? 33 ????? 36 In range message 38 ????? 39 Weather request 3E ????? 3F Estimated Time of Arrival 3G Free text message 3J Downlink message 3R ????? 3S Downlink message 3U Acknowledgement 3V20 Position report 41 SAS: Flow message 42 ????? 44 ????? 45 ????? 49 ????? 4L TOD?? 4M Cargo data 4P Weather report/forecast 4Q Departure report 4S Weather request 4T ETA report 4U Weather 4s Auto weather forecast 51 Ground GMT request response 52 Ground UTC request 53 Spare 54 Aircrew or ground initiated voice contact request 57 Alternate aircrew initiated position report 5D ATIS request 5P Temporary suspension of ACARS service 5R Aircrew initiated position report 5U Weather request 5V VDL switch advisory 5Y Revision to previous ETA, or diversion 5Y80 ATLAS AIR INC. DEFINED 5Z Airline designated downlink 7A Aircrew initiated engine data/takeoff thrust 7B Aircrew initiated miscellaneous message 80 Aircrew addressed downlink 81 Off report 82 Aircrew addressed downlink 83 Aircrew addressed downlink 84 Aircrew addressed downlink 85 Aircrew addressed downlink 86 Aircrew addressed downlink 87 Aircrew addressed downlink 88 Aircrew addressed downlink 88SQ Singapur Airlines weather request 89 Aircrew addressed downlink 8A SAS Out report 8B SAS Off report 8C SAS On report 8D SAS In report 8E SAS Out/return in report 8G SAS Take off data calculation request 8H SAS Loadsheet request/confirmation 8I SAS Flightplan request 8J SAS Crewlist request 8X Uplink ATIS information 8Z Avionics unable to process data 9E30 NORTHWEST AIRLINK DEFINED A0 ATIS facilities notification A1 Deliver oceanic clearance A3 Deliver departure clearance A4 Acknowledge departure clearance A5 Request position report A6 Requested ADS report A7 Forward free text to aircraft A8 Deliver departure slot A9 Deliver ATIS information AA ATC communications AA10 Frequency change AA14 AMERICAN AIRLINES DEFINED AA18 AMERICAN AIRLINES DEFINED AA40 AMERICAN AIRLINES DEFINED AA5J AMERICAN AIRLINES DEFINED AB Terminal weather information AB82 Free text report AC Pushback clearance AC2s Request ATIS information AC4F Off report AC4M Printer specific message AC4P Change Acars mode AC4Q Departure message AC4R Off specific message AC4T ETA/position report AC4s Auto weather forecast AD Expected taxi clearance AF CPC command AF1B AIR FRANCE DEFINED AF1D AIR FRANCE DEFINED AF21 AIR FRANCE DEFINED AF24 AIR FRANCE DEFINED AF26 AIR FRANCE DEFINED AF29 AIR FRANCE DEFINED AF2A AIR FRANCE DEFINED AF2B AIR FRANCE DEFINED AF2C AIR FRANCE DEFINED AF2D AIR FRANCE DEFINED AF2N AIR FRANCE DEFINED AF2T AIR FRANCE DEFINED AF2Z AIR FRANCE DEFINED AF30 AIR FRANCE DEFINED AF31 AIR FRANCE DEFINED AF41 AIR FRANCE DEFINED AF42 AIR FRANCE DEFINED AF46 AIR FRANCE DEFINED AF4A AIR FRANCE DEFINED AF4D AIR FRANCE DEFINED AF4G AIR FRANCE DEFINED AF4H AIR FRANCE DEFINED AF80 AIR FRANCE DEFINED AF8A AIR FRANCE DEFINED AF8B AIR FRANCE DEFINED AF8C AIR FRANCE DEFINED AF8D AIR FRANCE DEFINED AF8X AIR FRANCE DEFINED AN1F AANSETT AIRLINES DEFINED AS80 ALASKA AIRLINES DEFINED AT15 ROYAL AIR MAROC DEFINED AX Uplink message formats AY11 Out report AY12 Off report AY13 On report AY14 Inn report AY1M ETA estimate AY31 Position report AY81 Free text message AYX1 Weather request B0 ATIS facilities notification B1 Request oceanic clearance B2 Request oceanic readback B3 Request departure clearance B4 Acknowledge departure clearance B5 Provide position report B6 Provide ADS report B7 Forward free text to ATS B8 Request departure slot B9 Request ATIS information BA ATC communications BA10 ETA report or FST report BA12 BRITISH AIRWAYS DEFINED BA13 BRITISH AIRWAYS DEFINED BA14 BRITISH AIRWAYS DEFINED BA15 Flight schedule times BA80 BA Time check BB Terminal weather information BC Pushback clearance request BD Expected taxi clearance request BE CPC log-on/log-off request BF CPC wilco/unable response BR13 Weather request BU10 Arrival/departure report BU20 Out report BU21 Off report BU23 Initialization BU5A Ground GMT request BUX1 Weather request BW80 WEST INDIAN DEFINED C0 Uplink message to all cockpit printers C1 Uplink message to the cockpit printer 1 C2 Uplink message to the cockpit printer 2 C3 Uplink message to the cockpit printer 3 CA Printer status = error CA12 Weather request CB Printer status = busy CC Printer status = in local test mode CD Printer status = no paper CE Printer status = buffer overrun CF Printer status = status communication error CI20 CHINA AIRLINES DEFINED CI80 CHINA AIRLINES DEFINED CP80 Position report DF Digital acquisition unit DH1L Off message DL80 Position report E1 Internet e-mail message EC Engine display system EI85 Arrival report EI87 AIR LINGUS DEFINED EIH1 Data download F3 Dedicated transceiver advisory FX10 ATIS request message FX11 In range arrival report FX16 Automatic position report GS15 Position Report H1 Message to/from terminal H2 Meteorological report/command H3 Icing report HD HF data radio HF HFDL position report HF20 Departure aerodrome HF2T Call other aircraft HV20 Resetting ACARS system HX Undelivered uplink report JL12 Weather request KL10 ETA report KL1L Weather request KL20 Resetting ACARS system KL32 Weather/flow message KL41 Meet and assist KL43 Acars anomaly report KL44 Acars request route change KLQP Off report KLQR On report KLQS In report LH10 Frequency change LH1B Off report LH1C On report LH1L Weather request LH3L Command/response uplink LT27 Position report LX28 Position Report LX35 SWISS Position Report M1 IATA departure message M2 IATA arrival message M3 IATA return to ramp message M4 IATA return from airborne message ME30 Position report MU11 Present position report NH13 Weather request NW17 Status report NW21 Weather request NW24 Weather request NW30 Free text message NW31 Weather report NW33 Position report NW36 In range message NW39 Free text message OU26 ETA Report OUHX Weather Report Q0 ACARS link test Q1 ETA departure/arrival reports Q2 ETA reports Q3 Clock update Q4 Voice circuit busy Q5 Unable to process uplinked messages Q6 Voice-to-ACARS changeover Q7 Delay message QA Out/fuel report QB Off report QC On report QD In/fuel report QE Out/fuel destination report QF Off/destination report QG Out/return in report QH Out report QK Landing report QL Arrival report QM Arrival information report QN Diversion report QP Out report QQ Departure report QR On report QR16 Position Report QS In report QT Out/return/in report QX Intercept, unable to process RA Transmit diagnostic RB Response aircraft terminal to RA message S1 Network/VHF statistics report S2 VHF performance report/request S3 LRU configuration report/request SA Media Advisory SK20 Initialization SK21 Take off data calculation SK23 Loadsheet uplink SK24 Crewlist SK25 Special load notification SK26 Sigmet message SK29 Flow message SK31 Change frequency SK41 Slot time revision SK80 On track/position report SK83 Flight summary (ETA est.) SK84 Free text message SK85 Free text message SK86 Position/weather report SK87 Crew message SK88 Msg to dispatch SK89 Msg to station ahead SK8A Out report SK8B Off report SK8C On report SK8D In report SK8E Out/return in report SK8G Take off data calculation request SK8H Loadsheet request/confirmation SK8I Flightplan request SK8J Crewlist request SKRA Flow message SQ Link test message SQ88 Weather request T1 Cabin terminal message T2 Cabin terminal message UA40 UNITED AIRLINES DEFINED UA4I UNITED AIRLINES DEFINED UA80 Position report UA8X UNITED AIRLINES DEFINED UP30 Position report UP31 In report UP3F ETA message UP3G Free text message UP3I On report UP3J Flight plan UP3S Maintenance message UP3T Weather report/forecast UP3U Uplink acknowledgement UP47 Off report UV20 Position report WO Weather observation report X1 Service provider defined _ No information to transmit _* No information to transmit _ No information to transmit ¨ No information to transmit