As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB SMOKE DETECTOR LIGHT ILLUMINATED IN FLIGHT FOR 5 SECONDS, AIRCRAFT RETURNED TO THE FIELD. MAINTENANCE SECURED A LOOSE CONNECTOR PLUG ON THE BULKHEAD, SMOKE DETECTOR OPERATIONAL CHECK WAS GOOD. AIRCRAFT RETURNED TO SERVICE..