What was found
HEAVY CABIN SMOKE STARTING FROM AFT CABIN NEAR LAV TO FLIGHT DECK. INSPECTED ENGINE WITH NO DEFECTS NOTED. RAN APU AND ENGINES AND COULD NOT DUPLICATE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
HEAVY CABIN SMOKE STARTING FROM AFT CABIN NEAR LAV TO FLIGHT DECK. INSPECTED ENGINE WITH NO DEFECTS NOTED. RAN APU AND ENGINES AND COULD NOT DUPLICATE.