As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT AFT LAVATORY SMOKE DETECTOR WENT OFF IN CRUISE FOR SECONDS AND WENT OUT. LAVATORY CHECKED AND NO SMOKE FOUND. MAINTENANCE ACCOMPLISHED RIGHT AFT LAV SMOKE DETECTOR TEST PER AMM 26-14-00 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.