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FAA issues emergency AD on GE90-115B turbofan engines following uncontained failure incident
24 October 2019

The FAA issued an emergency Airworthiness Directive (AD), ordering the removal of a seal from certain General Electric GE90-115B turbofan engines.

The emergency AD was prompted by an incident that occurred on October 20, 2019, in which a Thai Airways Boeing 777-300ER airplane powered by GE GE90-115B turbofan engines experienced an uncontained high-pressure turbine (HPT) failure that resulted in an aborted takeoff. Debris impacted the aircraft fuselage and the other engine.

The AD calls for the removal from service of the Interstage Seal of certain GE GE90-115B turbofan engines, within 25 flight cycles.