🇺🇸 N251AK - Boeing 737NG 990ER/W - Alaska Airlines ASA27/AS27, John F Kennedy (JFK) to San Francisco (SFO) - 5.4 mi away @ 36325 ft, heading WNW at 513 mph. Spotted 16x before. [07:49:24 PM CDT] #A25B3F #N251AK #B739 #ALASKA #ASA27 #AS27 #ADSB #ADSBbot