What was found
FLIGHT 2139, THE FLIGHT ATTENDANTS REPORTED A BURNING RUBBER ODOR AROUND ROW 20 IN CABIN. THE ODOR DISSIPATED AFTER A FEW MINUTES. THE FLIGHT LANDED WITHOUT INCIDENT. ACCOMPLISHED CABIN AIR QUALITY JOB CARD, CHANGED LEFT AND RIGHT HEPA FILTERS, ACCOMPLISHED A HIGH POWER ENGINE RUN, EITHER BLEED AND APU BLEED FOR HOURS. NO ODORS NOTED, AC IS OKAY FOR SERVICE.