As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RAW FUEL ODOR IN CABIN DURING APU OPERATION. AIRCRAFT GROUNDED. ACCOMPLISHED MCM 21-96-01 AND VERIFIED FUEL ODOR IN CABIN. LEAK CHECKED AND FOUND FUEL AT APU DOOR DRAIN. REMOVED AND REPLACED APU IAW MCM 49-96-82. SYSTEM CHECK NORMAL. (OPEN)