As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH ENG A/I ON AND PNEUMATIC X-FFED CLOSED, GOT SMOKE AND FUMES IN CABIN. BOTH AFT LAV SMOKE DETECTORS WENT OFF. ENG A/I ON FOR APPROX 20 MINS. A/C WAS ON APPROACH WITH ENG PWR AT 1.3 EPR, ALT BELOW 10K FT. PERFORMED DUCT BURN-OUT PER MM. REPLACED WATER SEP BAGS. FOUND APU LEAKING OIL. PLACED ON MCO.