The FAA has ordered targeted repairs on certain Engine Alliance GP7200-series engines fitted to Airbus A380s after an uncontained interstage seal failure led to an engine shutdown and an aborted takeoff. The airworthiness directive, effective 23 October, requires replacement of specified turbine components on affected GP7270, GP7272 and GP7277 engines, with the most urgent seals due within 50 flight cycles or 30 days.
The action covers only a defined set of high-pressure turbine interstage seals, not every engine in the fleet. Operators must replace the 15 seals with the highest flight-cycle counts since overhaul, using parts eligible under an Engine Alliance service bulletin issued in September. The FAA issued the rule without a prior public comment period because of the safety risk and compressed compliance window.
The agency warned that a repeat failure could trigger an engine fire and damage to the aircraft. Investigators believe cracking began near locating features between the interstage seal and the shaft from the first-stage turbine disk, with seal rotation and movement in reassembled-overhaul parts cited as contributing factors. The FAA estimates compliance at about $528,150 per affected engine, largely driven by parts costs, and said no engines on U.S.-registered aircraft are affected.