As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE OVERNIGHT SERVICE CHECK, MAINTENANCE INSPECTION, MAINTENANCE REPORTED THAT THE CEILING EMERGENCY LIGHTS BETWEEN FUSELAGE STATIONS 1133 AND 1171 WOULD NOT TEST. FURTHER REPORT THE REMOVAL AND INSTALLATION OF AN EMERGENCY LIGHT POWER SUPPLY BATTERY PACK AT FUSELAGE STATION 1190R. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED IAW AMM 33-53-00. THE AIRPLANE HAS RETURNED TO SERVICE.