BLEEP BLOOP: I just saw an aircraft with callsign #EJA612 (ICAO code #A7F79B) flying at 314 kt at altitude 8550 feet MSL at coordinates 34.2262,-118.4214.

They must have had a 50 knots tail wind.

https://globe.adsbexchange.com/?icao=a7f79b
https://www.openstreetmap.org/?mlat=34.2262&mlon=-118.4214#map=15/34.2262/-118.4214

BLEEP BLOOP: I just saw an aircraft with callsign #EJA612 (ICAO code #A7F79B) flying at 302 kt at altitude 4900 feet MSL at coordinates 34.1413,-118.5766.

That's, like, super fast.

https://globe.adsbexchange.com/?icao=a7f79b
https://www.openstreetmap.org/?mlat=34.1413&mlon=-118.5766#map=15/34.1413/-118.5766