https://github.com/airframesio/acars-message-documentation
Discoveries, documentation, and notes relating to decoding ACARS message text.
https://github.com/airframesio/acars-message-documentation
acars acars-messages acars-transmissions acarsdec hfdl vdl vdl2 vdlm2
Last synced: 19 days ago
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Discoveries, documentation, and notes relating to decoding ACARS message text.
- Host: GitHub
- URL: https://github.com/airframesio/acars-message-documentation
- Owner: airframesio
- Created: 2021-01-06T02:11:49.000Z (about 5 years ago)
- Default Branch: main
- Last Pushed: 2025-04-25T22:47:43.000Z (9 months ago)
- Last Synced: 2025-04-25T23:26:03.837Z (9 months ago)
- Topics: acars, acars-messages, acars-transmissions, acarsdec, hfdl, vdl, vdl2, vdlm2
- Homepage:
- Size: 313 KB
- Stars: 30
- Watchers: 5
- Forks: 19
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
Awesome Lists containing this project
README
# ACARS Message Documentation
Discoveries, documentation, and notes relating to decoding ACARS message text.
[](https://github.com/airframesio/acars-message-documentation/graphs/contributors)
[](https://github.com/airframesio/acars-message-documentation/pulse)
[](https://discord.gg/airframes)
## Purpose
The purpose of this repository is to document the discoveries and notes related to decoding ACARS message text payload in order to better organize and develop the ACARS Decoder libraries. All efforts here will directly benefit the [Airframes ACARS Decoder library](https://github.com/airframesio/acars-decoder-typescript).
## Research
A collaborative effort of analyzing and researching ACARS message algorithms and structures is ongoing. This section serves to link to primary/current initiatives. We welcome Pull Requests for anything ongoing here so that it can eventually be confirmed and moved into the documentation.
Label | Sublabel | Preambles | Description
----- | -------- | --------- | -----------
[:;](research/colon-semicolon.md) | | | Aircraft Transceiver Frequency Change
[_d](research/_d.md) | | | Transponder Pings / No-Ops
[10](research/10.md)
[11](research/11.md) | | | Lots of formats
[12](research/12.md) | | [N ](research/12/N-space.md)
[13](research/13.md)
[14](research/14.md)
[15](research/15.md)
[16](research/16.md) | | [N ](research/16/N-space.md)
[17](research/17.md)
[18](research/18.md)
[19](research/19.md)
[1A](research/1A.md)
[1B](research/1B.md)
[1C](research/1C.md)
[1D](research/1D.md)
[1E](research/1E.md)
[1G](research/1G.md)
[1L](research/1L.md)
[1M](research/1M.md)
[1P](research/1P.md)
[1X](research/1X.md)
[20](research/20.md) | | [POS](research/20/POS.md)
21
[22](research/22.md)
23
24
25
26
27
28
2A
2B
2C
2D
2E
2F
[2L](research/2L.md) | | [DAT](research/2L/DAT-Jetstar.md) | Used by Jetstar AU for OOOI
2P
2T
2Z
[30](research/30.md) | | [/EA](research/30/forward-slash-EA.md)
31
[32](research/32.md)
33
34
35
36
[37](research/37.md)
38
39
3A
3B
3C
3E
3F
3J
3L
3M
3N
3P
3S
4~
[40](research/40.md)| | | Ground to Air, Request for Clearance via Free Text w ATC, OPS and administrative msg/requests from ground, weather info.
41
42
43
44 | | | OOOI + Positions
45
46
47
48
49
[4A](research/4A.md)
4C
4E
4H
[4J](research/4J.md)| | | Position and weather
4K
[4L](research/4L.md)
4M
[4N](research/4N.md)
[4P](research/4P.md)
4Q
4R
4S
4T
4X
4Y
4Z
52
58
5D
5P
[5U](research/5U.md)
5V
5Y
[5Z](research/5Z.md) | | [/](research/5Z/forward-slash.md)
[80](research/80.md)
81
82
[83](research/83.md)
84
85
86
87
88
8A
8D
8E
8S
8X
99
A0
[A1](research/A1.md)
[A2](research/A2.md)
[A3](research/A3.md)
[A4](research/A4.md)
A6
A9
AA
[B0](research/B0.md)
[B1](research/B1.md)
[B2](research/B2.md)
[B3](research/B3.md)
[B4](research/B4.md)
[B5](research/B5.md)
[B6](research/B6.md) | | [/](research/B6/forward-slash.md)
[B9](research/B9.md) | | [/](research/B9/forward-slash.md)
[BA](research/BA.md)
BB
C1
CA
[H1](research/H1.md) | | [#CFB](research/H1/CFB.md), [#CFB.01](research/H1/CFB/CFB.01.md), [FPN](research/H1/FPN.md), [POS](research/H1/POS.md), [Qantas various](research/H1/Qantas.md) | Message to/from Terminal
[H2](research/H2.md)
[HX](research/HX.md)
[MA](research/MA.md) | | | Media Advisories (appears to be MIAM focused)
[Q0](research/Q0.md)
[Q2](research/Q2.md)
Q3
Q5
Q6
Q7
QA
QC
QD
QE
[QF](research/QF.md)
QP
[QQ](research/QQ.md)
QR
QS
QX
[RA](research/RA.md) | | |
[RB](research/RB.md)
RF
[SA](research/SA.md)
SQ | | | Squitters / Transponder Pings
VA
X1
## Documentation
We will compile and create actual documentation as we confirm our research results.
PENDING...
## Contributors
Name | Description
---- | -----------
[Kevin Elliott](https://github.com/kevinelliott) | Primary Airframes contributor
[Frank Vance / fvance](https://github.com/fvance) | Multiple label research contributions
[Andy / andermatt64](https://github.com/andermatt64) | Multiple label research contributions
[Thomas / period](https://github.com/period) | Multiple label research contributions
[Michael Johnson / johnsom](https://github.com/johnsom) | Multiple label research contributions
[Chris Globe / chrisglobe](https://github.com/chrisglobe) | Multiple label research contributions
[ge0metrix](https://github.com/ge0metrix) | Label updates
Unnamed | Several contributors who wished to be unnamed or I have not yet been granted permission to list here