As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF, SMELLED AN ODOR SIMILAR TO AN ELECTRICAL FIRE IN THE COCKPIT AND CABIN. THE LT AFT LAV FIRE DETECTOR WENT OFF. NO FIRE EVIDENCE WAS FOUND. USED FLASHLIGHT TO MAKE THOROUGH SEARCH OF LAV. SUSPECT AIR CONDITIONING. FOUND 2 B-NUTS ON IB OF LT IB FLAP LOOSE AND 2 B-NUTS ON UPLOCK LOOSE, TIGHTENED SAME. PERFORMED DUCT BURN-OUT REPLACED APU AND CLEANED INLET ON ITEM NO.3 REPLACED WATER BAGS ON OPN 5088.