As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3548 THE CREW REPORTED THE EMERGENCY LIGHTS WOULD NOT CYCLE ON OFF. THE AIRCRAFT WAS REMOVED FROM SERVICE. RESET SYSTEM AND THE OPERATIONAL CHECK WAS GOOD REF AMM 33-51-00 AND AMM 24-00-00. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.