As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: LAVATORY SMOKE LIGHT AND WARNING BEEPER CAME ON AT DESCENT POINT, NO EVIDENCE OR SMELL. MAINTENANCE REPLACED SMOKE DETECTOR IN LAVATORY A PER AMM 26-14-01 AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 26-14-00. MAINTENANCE ALSO PERFORMED SATISFACTORY OPERATIONAL CHECK OF AFT LAVATORIES PER AMM 26-14-00.