As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FUEL SMELL IN CABIN DURING DEPLANING WITH ENGINES OFF AND APU RUNNING BOTH PACKS. CREW SHUT OFF PACKS AND REPORTED NO GSE EQUIPMENT AROUND A/C WITH NO DEFECTS NOTED ON POST FLIGHT WALKAROUND. CREW SELECTED PACK 1 FOLLOWED BY PACK 2 WITH NO FUEL SMELL NOTED. CREW SHUTDOWN APU AND REPORTED SLIGHT HINT OF FUEL SMELL. RESTARTED APU AND RAN BOTH PACKS WITH NO FUEL SMELL IN A/C.