As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. SMOKE DETECTOR IN THE RIGHT AFT LAVATORY EMITTED A WARNING INDICATION. NO SMOKE IN THE LAVATORY AND NO INDICATION IN THE COCKPIT. ACCOMPLISHED SMOKE DETECTOR INSPECTION IAW AMM 26-14-01 WITH NO FAULTS NOTED. OPERATIONAL CHECK GOOD.