As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT LAVATORY SMOKE DETECTOR SYSTEM IS INOPERATIVE WHEN TEST SWITCH WAS ACTIVATED. AFTER RESETTING RELEVANT CIRCUIT BREAKER ONE TIME IN COCKPIT AND ACTIVATING TEST SWITCH AGAIN, ALL INDICATIONS ARE NORMAL. SMOKE DETECTOR SYSTEM IN RT LAVATORY IS FULLY OPERATIONAL. (K)