BLEEP BLOOP: I just saw an aircraft with callsign #SWA1931 (ICAO code #AA4E52) flying at 317 kt at altitude 9000 feet MSL at coordinates 34.2286,-118.4875.

They must have had a 50 knots tail wind.

https://globe.adsbexchange.com/?icao=aa4e52
https://www.openstreetmap.org/?mlat=34.2286&mlon=-118.4875#map=15/34.2286/-118.4875