As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL SMELL IN CABIN AND FLT DECK WITH BOTH PACKS RUNNING ON APU BLEED ONLY. NO SMELL WHEN PACKS ON WITH ENGINE BLEEDS. FACT 03JUN24 17:04 PHL MX RAN APU & BOTH PACKS FOR 10-15MINS. NO OBVIOUS FUEL SMELLS DETECTED. INSPECTED APU UNIT FOR LEAKS DURING RUN, NONE NOTE. A/C OK FOR SERVICE AT THIS TIME