What was found
FLT CREW REPORTED VISIBLE SMOKE IN AFT GALLEY WHILE AT GATE PRIOR TO BOARDING. CONTRACT MTC FOUND APU BATTERY SHORTED AND THE SOURCE OF SMELL/SMOKE. REPLACE THE APU BATTERY. THE BATTERY CHARGER AND THE K117 START CONTACTOR.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT CREW REPORTED VISIBLE SMOKE IN AFT GALLEY WHILE AT GATE PRIOR TO BOARDING. CONTRACT MTC FOUND APU BATTERY SHORTED AND THE SOURCE OF SMELL/SMOKE. REPLACE THE APU BATTERY. THE BATTERY CHARGER AND THE K117 START CONTACTOR.