
With thousands of aircraft parked around the globe this year the industry is learning more and more about the impact of these long-term storage actions. This week Airbus and EASA issued an advisory regarding battery systems on the A320, A330, A340 and A380 family aircraft that “could lead to reduced battery endurance performance, possibly resulting in failure to supply the minimum essential electrical power during abnormal or emergency conditions.”
The Airworthiness Directive highlights a risk that “repetitive disconnection and reconnection of batteries during aeroplane parking or storage (as detailed in the applicable Aircraft Maintenance Manual) may lead to reduction of capacity of those batteries.”
For aircraft with affected batteries on board that have been disconnected and reconnected more than four times the directive calls for a replacement of the part within 4-6 months, depending on the aircraft type.
There are exceptions to the replacement requirement should the disconnections be performed and the batteries preserved under specific procedures.
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