Airworthiness Directives; Engine Alliance Engines
Key claim: Airlines must remove and replace the high-pressure turbine interstage seal on certain Engine Alliance GP7270, GP7272, and GP7277 engines after a seal failure caused an aborted takeoff.
Abstract
(Rule · Transportation Department, Federal Aviation Administration) The FAA is adopting a new airworthiness directive (AD) for certain Engine Alliance (EA) Model GP7270, GP7272, and GP7277 engines. This AD was prompted by a report of an aborted takeoff that resulted from an uncontained failure of the high-pressure turbine (HPT) interstage seal. This AD requires removal from service and replacement of the HPT interstage seal with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
Why this matters
Engine Alliance GP7200-series engines power Airbus A380s, so a mandatory HPT interstage seal replacement affects a narrow but high-capacity segment of long-haul widebody fleets. The directive follows a single in-service failure that produced an aborted takeoff, continuing the FAA’s pattern of using ADs to drive targeted part replacement after discrete engine events rather than waiting for recurrence.