As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER STARTING APU ON SHORT FINAL FLIGHT CREW NOTICED AND DETECTED STRONG ODOR OF GASOLINE, FLIGHT ATTENDANT CALLED AND SAID SHE THOUGHT SHE SMELLED THE ODOR OF SOMETHING BURNING...FLT 5059 DEL 36 MINS / ( AUXILIARY POWER UNIT APU -INTAKE DOOR DEACTIVATED CLOSED / )