ELECTRICAL SECTION 6 MAIN INTRODUCTION APU GEN OFF BUS BATTERY BATTERY BUS FAIL BATTERY DISCHARGE DRIVE ELEC ELECTRICAL FAILURE DIAGNOSIS ELECTRICAL POWER SOURCE (BUS) ELECTRICAL POWER SOURCE (LIST) ELECTRICAL SYSTEM GENERATOR PHASE LOSS GROUND POWER AVAILABLE LOST OF BOTH ENGINE DRIVEN GENERATORS SOURCE OFF STANDBY POWER OFF TR UNIT TRANSFER BUS OFF *AUCUNE ACTION VITALE
