As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ODOR THROUGH OUT CABIN AND FLIGHT DECK WITH M2 LAVATORY SMOKE DETECTOR SOUNDING. EMERGENCY DECLARED FLIGHT RETURNED LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED RT ENGINE DUE TO OIL THROUGH OUT COMPRESSOR SECTION. SYS GROUND CHECK NORMAL OPERATION. (OPEN)