As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AFT STARBOARD SMOKE DETECTOR LAVATORY WENT OFF MOMENTARILY IN FLIGHT. MAINTENANCE INSPECTED LAVATORY AND PERFORMED A BITE TEST OF THE LAVATORY SMOKE DETECTION SYSTEM PER AMM 26-17-00 AND NO FAULTS WERE NOTED.