As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - DTW - FLT 448 - BOTH LAVATORY SMOKE DETECTORS ACTIVATED ALONG WITH THE SMELL OF BURNING OF OIL AND VISIBLE SMOKE. THE AIRCRAFT DIVERTED TO THE NEAREST AIRPORT AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED BOTH AIR CONDITIONING WATER SEPARATOR COALESCER BAGS. THE BAGS WERE OIL SOAKED FROM A PREVIOUS APU OIL LEAK PROBLEM. (M)