Discoveries, documentation, and notes relating to decoding ACARS message text.
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.
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 |
|---|---|---|---|
| :; | Aircraft Transceiver Frequency Change | ||
| _d | Transponder Pings / No-Ops | ||
| 10 | |||
| 11 | Lots of formats | ||
| 12 | N | ||
| 13 | |||
| 14 | |||
| 15 | |||
| 16 | N | ||
| 17 | |||
| 18 | |||
| 19 | |||
| 1A | |||
| 1B | |||
| 1C | |||
| 1D | |||
| 1E | |||
| 1G | |||
| 1L | |||
| 1M | |||
| 1P | |||
| 1X | |||
| 20 | POS | ||
| 21 | |||
| 22 | |||
| 23 | |||
| 24 | |||
| 25 | |||
| 26 | |||
| 27 | |||
| 28 | |||
| 2A | |||
| 2B | |||
| 2C | |||
| 2D | |||
| 2E | |||
| 2F | |||
| 2L | |||
| 2P | |||
| 2T | |||
| 2Z | |||
| 30 | /EA | ||
| 31 | |||
| 32 | |||
| 33 | |||
| 34 | |||
| 35 | |||
| 36 | |||
| 37 | |||
| 38 | |||
| 39 | |||
| 3A | |||
| 3B | |||
| 3C | |||
| 3E | |||
| 3F | |||
| 3J | |||
| 3L | |||
| 3M | |||
| 3N | |||
| 3P | |||
| 3S | |||
| 4~ | |||
| 40 | 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 | |||
| 4C | |||
| 4E | |||
| 4H | |||
| 4J | Position and weather | ||
| 4K | |||
| 4L | |||
| 4M | |||
| 4N | |||
| 4P | |||
| 4Q | |||
| 4R | |||
| 4S | |||
| 4T | |||
| 4X | |||
| 4Y | |||
| 4Z | |||
| 52 | |||
| 58 | |||
| 5D | |||
| 5P | |||
| 5U | |||
| 5V | |||
| 5Y | |||
| 5Z | / | ||
| 80 | |||
| 81 | |||
| 82 | |||
| 83 | |||
| 84 | |||
| 85 | |||
| 86 | |||
| 87 | |||
| 88 | |||
| 8A | |||
| 8D | |||
| 8E | |||
| 8S | |||
| 8X | |||
| 99 | |||
| A0 | |||
| A1 | |||
| A2 | |||
| A3 | |||
| A4 | |||
| A6 | |||
| A9 | |||
| AA | |||
| B0 | |||
| B1 | |||
| B2 | |||
| B3 | |||
| B4 | |||
| B5 | |||
| B6 | / | ||
| B9 | / | ||
| BA | |||
| BB | |||
| C1 | |||
| CA | |||
| H1 | #CFB, #CFB.01, FPN, POS | ||
| H2 | |||
| HX | |||
| MA | Media Advisories (appears to be MIAM focused) | ||
| Q0 | |||
| Q2 | |||
| Q3 | |||
| Q5 | |||
| Q6 | |||
| Q7 | |||
| QA | |||
| QC | |||
| QD | |||
| QE | |||
| QF | |||
| QP | |||
| QR | |||
| QS | |||
| QX | |||
| RA | |||
| RB | |||
| RF | |||
| SA | |||
| SQ | Squitters / Transponder Pings | ||
| VA | |||
| X1 |
We will compile and create actual documentation as we confirm our research results.
PENDING...
| Name | Description |
|---|---|
| Kevin Elliott | Primary Airframes contributor |
| Frank Vance / fvance | Multiple label research contributions |
| Andy / andermatt64 | Multiple label research contributions |
| Thomas / period | Multiple label research contributions |
| Michael Johnson / johnsom | Multiple label research contributions |
| Chris Globe / chrisglobe | Multiple label research contributions |
| ge0metrix | Label updates |
| Unnamed | Several contributors who wished to be unnamed or I have not yet been granted permission to list here |