Appears to be telemetry data indicating when engines started running?
14004L KJFK KPIT7
/FN 4835
/ENG 1 RUN 001244/ENG 2 RUN 003220
Emitted by N133HQ as YX4815 at 00:38:47
14014L KLGA KCMH7
/FN 5692
/ENG 1 RUN 011816/ENG 2 RUN 012237
Emitted by N880RW as YX5692 at 01:41:48
164L 7
/FN
/ENG 1 RUN ------/ENG 2 RUN ------
Emitted by N391DA as DL0002 at 16:28:20
06234L KJFK KATL7
/FN 0684
/ENG 1 RUN 224600/ENG 2 RUN 225829
Emitted by N6702 as DL0684 at 23:22:31
| Code | Meaning |
|---|---|
| FN | Flight number |
| ENG | Engine |
06234L KJFK KATL7
First 6 characters seem to be broken down into 2 character fields:
| Offset | Value | Meaning |
|---|---|---|
+00 |
06 |
Day of the month (e.g. for Aug 16, 2022 the value would be 16) |
+02 |
23 |
Hour of the day |
+04 |
4L |
Message label |
The next 3 fields are populated by the origin airport ICAO code, destination airport ICAO code, and the number 7.
I'm not sure why it is 7 but all my example instances (~291 entries) have the value 7.
/FN 0684
The second line describes the flight number for the leg.
/ENG 1 RUN 224600/ENG 2 RUN 225829
The third line has what I believe to be the start timestamp of each of the two engines. In this example, engine 1 started its "run" at 22:46:00 and engine 2 started its "run" at 22:58:29.