As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED A MOMENTARY SMOKE DETECTOR ACTIVATION FROM AFT LEFT LAVATORY AT CRUISE. NO SMOKE OR FUME INDICTIONS. MAINTENANCE RESET SMOKE DETECTOR SYSTEM AND ACCOMPLISHED A SATISFACTORY BITE CHECK PER AMM 26-10-00.