As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK, MAINTENANCE FOUND THAT THE TAIL COMPARTMENT OVERHEAD EMERGENCY LIGHTS WERE INOPERATIVE. MX SECURED THE LOOSE BATTERIES IN THE CHARGER, REPLACED ONE BULB AND TERMINATED THE QUICK DISCONNECT TO THE LIGHT. THE LIGHTS RETURNED TO AN OPERATIONAL STATE.