As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR FROM CABIN SIMILAR TO ELEC FIRE & BURNING. STRONGEST AROUND ROW 18 AFT OF ACFT. FOUND CB AFT LAVATORY EXHAUST FAN POPPED, CBP-1 B-8. INSPECTED & FOUND FAN INOPERATIVE & SOURCE OF BURNING SMELL. DEFERRED AFT LAVATORY EXHAUST FAN IAW MEL 21-23-2 CAT C. PLACARD INSTALLED & PROCEDURES COMPLIED WITH. PULLED & COLLARED CB.