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	
_ 	ACK	
_*	ACK	
_	ACK	
 	ACK	
