Time stamps are for T-Channel assignments.
Number of subsequent signaling units corresponds to amount of data send by A/C?
Downlink Comms:
16:00:23.905 5 Subsequent Signalling Units
16:01:20.405 5 Subsequent Signalling Units
16:09:37.905 8 Subsequent Signalling Units
16:11:04.405 5 Subsequent Signalling Units
16:28:01.905 10 Subsequent Signalling Units
16:29:17.905 30 Subsequent Signalling Units
16:29:42.405 13 Subsequent Signalling Units
16:41:53.405 6 Subsequent Signalling Units
16:41:58.405 12 Subsequent Signalling Units
16:42:17.905 30 Subsequent Signalling Units
16:42:33.405 30 Subsequent Signalling Units
16:42:48.905 29 Subsequent Signalling Units
16:55:24.405 30 Subsequent Signalling Units
16:55:38.905 30 Subsequent Signalling Units
16:55:53.905 30 Subsequent Signalling Units
16:56:08.905 5 Subsequent Signalling Units
17:06:49.906 30 Subsequent Signalling Units
17:07:04.905 30 Subsequent Signalling Units
17:07:19.905 30 Subsequent Signalling Units
17:07:34.905 30 Subsequent Signalling Units
18:28:06.407 5 Subsequent Signalling Units
@DrPhillipa
16:29 could be "Gate Out"
16:41 could be "Wheels Off"
OOOI Data - ASPMHelp
17:07 was an ACARS message Inmarsat used for calibration:
The engineers at Inmarsat were able to validate their estimates of the plane’s location by matching its position at 1:07 a.m., when it sent a burst of data through its Aircraft Communications and Reporting System, McLaughlin said.
Hunt for Jet Switches to Visual Search as Radar Empty - Bloomberg