EASA AD US-2026-20-12
Turbine - High-Pressure Turbine Interstage Seal - Replacement
The Federal Register document titled 'Turbine - High-Pressure Turbine Interstage Seal - Replacement' is a final rule airworthiness directive (AD 2026-20-12) issued by the FAA affecting Engine Alliance Model GP7270, GP7272, and GP7277 engines. It addresses an unsafe condition related to uncontained failure of the high-pressure turbine interstage seal, which was reported during an aborted takeoff on an Airbus A380 equipped with these engines. The AD mandates removal and replacement of certain high-cycle HPT interstage seals to prevent potential engine fire and aircraft damage.
Airworthiness DirectiveMaintenanceSafety MgmtEngine Alliance GP7200Engine Alliance GP7270Engine Alliance GP7272Engine Alliance GP7277Airbus A380