The emergency airworthiness directive issued Friday for knife-edge seals on Pratt & Whitney GTF on the A320neo family covers 43 engines post serial number 777450 that are active in the Airbus fleet.  The today has grounded at least 11 that are equipped with the new model engines, as well as halting deliveries of new to the Airbus production line, resulting in additional customer delivery delays.

Because the requires “de-pairing” of the affected engine models, from those 22 on which they are installed will likely be transferred to other aircraft in existing fleets to mix impacted and non-impacted engines and avoid the potential for a dual IFSD. This means the will likely impact 44 aircraft overall that are currently in service once the de-pairing is completed.  There are currently 113 GTF powered A320neo family in service with 226 engines, so the impacts the most recently delivered 19% of the fleet.

As we obtain more information on the timing of the potential fix, we will continue to update the story.

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