Only seen from Aeroméxico flight to date.
Recorded Sunday, June 19, 2022 8:27:56 UTC AVLC flags indicate aircraft is on ground at time of transmission
N 29.763/W 95.530
...
This appears to be nothing more than the aircraft position.
Records from ADSB Exchange show this aircraft was at 38,100 feet passing over this location at the time the message was recorded.