FAA orders 787 modification

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By admin April 25, 2016 19:49

FAA orders 787 modification

A Federal Aviation Administration (FAA) airworthiness directive issued on April 22, orders flight manuals for 787-8 and 787-9 airplanes powered by General Electric (GE) GEnx-1B engines need to be revised to provide the flight crew a revised fan ice removal procedure and a new associated mandatory flight crew briefing to reduce the likelihood of engine damage due to fan ice shedding. The FAA warns that for aircraft with certain engines, this AD will also require “reworking or replacing at least one engine”. The AD was prompted by a recent engine fan blade rub event that caused an in-flight non-restartable power loss. The FAA says that it is issuing this AD to “prevent susceptibility to heavy fan blade rubs, which could result in engine damage and a possible in-flight non -restartable power loss of one or both engines”.

The FAA adds that it is continuing “to investigate this issue with Boeing and GE.” The problem seems to be limited to the GEnx-1B PIP2 engine rather than the older GEnx-1B PIP1, which continued to operate normally even after being subject to the same conditions as the newer engine. The FAA says that since there are several planes that use two GEnx-1B PIP2 engines (the Dreamliner is a twin jet), there lies a possibility that total engine failure could happen on such flights.

The directive would be effective starting May 9, 2016.

admin
By admin April 25, 2016 19:49