Очередной индус в ливрее Стар-альянса. Первый из альянсов, если что...
Ранее 2017 не просматривается...когда по плану поставка в АФЛ?
This AD was prompted by the determination that a Model 787 airplane that has been powered continuously for 248 days can lose all alternating current (AC) electrical power due to the generator control units (GCUs) simultaneously going into failsafe mode. This condition is caused by a software counter internal to the GCUs that will overflow after 248 days of continuous power. We are issuing this AD to prevent loss of all AC electrical power, which could result in loss of control of the airplane.
We have been advised by Boeing of an issue identified during laboratory testing. The software counter internal to the generator control units (GCUs) will overflow after 248 days of continuous power, causing that GCU to go into failsafe mode. If the four main GCUs (associated with the engine mounted generators) were powered up at the same time, after 248 days of continuous power, all four GCUs will go into failsafe mode at the same time, resulting in a loss of all AC electrical power regardless of flight phase.
Баг, как раз в счетчике. При переполнении переменной происходит ошибка и ПО контролера просто перестает работать: "GCU to go into failsafe mode". Очень условно - это как синий экран на винде.Баг, на самом деле, не в счетчике, а в том, что генератор может выключиться по такому странному условию.
ПО контролера просто перестает работать