Preventing Loss of Engine Generators on A320 Family, A330 and A340 Aircraft
Some cases of emergency electrical configurations on A320 aircraft were reported to Airbus where both Integrated Drive Generators (IDGs) failed in sequence due to worn components inside their Constant Speed Drive (CSD).This article describes one of these events and explains why worn IDGs may have frequency regulation issues in certain circumstances that may lead to emergency electrical configuration. It also presents the preventive maintenance tasks that have been introduced to detect worn IDGs in advance. Recommendations are provided to flight crews to prevent a potential emergency electrical configuration in the case of one generator failure.
Engine Relight After an All-engine Flameout
An all-engine flameout is one of the most stressful situations where flight crews need to urgently relight the aircraft engines. Incorrect application of the engine relight sequence can lead to delayed or unsuccessful engine restarts.This article describes an in-service event in which such a situation was encountered. It recalls the various steps of the engine relight sequence in the ALL ENG FAIL procedure of the QRH and highlights the improvements that have been made on the operational procedure of A300, A310, A320 family, A330, A340, A350 and A380 aircraft.