What was found
TUL - BATTERY BACK AT STATION 578 FOR EMERGENCY CABIN LIGHTS FAILED 15 MINUTE TEST. REPLACED BATTERY PACK AT STATION 578 FOR EMERGENCY CABIN LIGHTS. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
TUL - BATTERY BACK AT STATION 578 FOR EMERGENCY CABIN LIGHTS FAILED 15 MINUTE TEST. REPLACED BATTERY PACK AT STATION 578 FOR EMERGENCY CABIN LIGHTS. SYSTEM GROUND CHECKED NORMAL OPERATION.