As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3634 THE CREW REPORTED THE NR 4 EMERGENCY CEILING LIGHT WAS INOPERABLE. REMOVED AND REPLACED THE NR 4 CEILING LEVEL FLOOD EMERGENCY LIGHT BULB IAW CRJ-700 AMM 33-51-09. THE OPERATIONAL CHECK WAS GOOD. NO DEFECTS NOTED. MEL ITEM RESTORED. THE AIRCRAFT WAS RETURNED TO SERVICE.