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FAA orders A380 engine seal replacement after uncontained failure

One high pressure turbine seal broke apart and forced an Airbus A380 to abort its takeoff roll, and the FAA now wants every high cycle seal of its kind off the wing within weeks.

16 October 2026

Airbus A380
A Airbus A380, for illustration. Not the aircraft in this story. Photo: Hermann Maurer, CC BY 2.0, via Wikimedia Commons

The Federal Aviation Administration (FAA) issued an Airworthiness Directive (AD) on 8 October 2026 for certain Engine Alliance GP7270, GP7272, and GP7277 engines, the GP7200 family that powers only the Airbus A380. The directive follows a report of an aborted takeoff caused by an uncontained failure of the high-pressure turbine (HPT) interstage seal, a disc between turbine stages that is meant to contain debris if a blade or disc breaks apart.

Engine Alliance, the GE Aerospace and Pratt & Whitney joint venture that built the GP7200, found that cracking most likely started at the clocking keys that locate the seal against the HPT stage-one disk aft shaft. The FAA published the rule as a final rule with a request for comments rather than as a proposal first, a step reserved for a concern judged too urgent to wait on, and called the action interim while the root cause investigation continues.

The AD requires removing the fifteen highest cycle interstage seals and replacing them with an eligible part, per Engine Alliance's service bulletin EAGP7-A72-479 of 4 September 2026. It takes effect 23 October 2026, with comments due by 23 November 2026. The airline and aircraft involved have not been named. No US registered aircraft carry these engines, so the work falls to Gulf and Asian carriers, which fly most of the world's A380 fleet.

In plain terms

An HPT interstage seal is not a simple gasket. It separates turbine stages and is built to hold hot gas and debris inside the engine case, so an uncontained failure means a piece broke through that case instead of staying put.

On the line

Check seals by cycles since overhaul rather than by aircraft registration, since the fifteen units the AD names are the highest cycle seals in the fleet, not fixed tail numbers. Pull the service bulletin before the next shop visit for the replacement part numbers the AD requires.

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