What was found
PHL FLT 711 POST FLIGHT - ZRH TO PHL. MAIN APU BATTERY OVERHEAT SMOKING WHEN AIRCRAFT WAS ON THE GATE. REMOVED AND REPLACED MAIN APU BATTERY. ALSO CHANGED APU BATTERY CHARGER FOR PRECAUTIONARY REASONS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PHL FLT 711 POST FLIGHT - ZRH TO PHL. MAIN APU BATTERY OVERHEAT SMOKING WHEN AIRCRAFT WAS ON THE GATE. REMOVED AND REPLACED MAIN APU BATTERY. ALSO CHANGED APU BATTERY CHARGER FOR PRECAUTIONARY REASONS.