As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT-DTW - FLT 1275 - AFTER TAKEOFF BOTH LAVATORY SMOKE DETECTORS ACTIVATED AND THE FLIGHT ATTENDANTS NOTICED A CHEMICAL SMELL THROUGHOUT THE CABIN. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED BOTH AIR CONDITIONING PACK WATER SEPARATORS. (M)