BLEEP BLOOP: I just saw an aircraft with callsign #AAL2404 (ICAO code #A8AA87) flying at 314 kt at altitude 8800 feet MSL at coordinates 34.2350,-118.4843.

They must have had a 50 knots tail wind.

https://globe.adsbexchange.com/?icao=a8aa87
https://www.openstreetmap.org/?mlat=34.2350&mlon=-118.4843#map=15/34.2350/-118.4843