FAA Orders GE Engine Disk Replacements for Safety Reasons
Published Date: 1/31/2025
Proposed Rule
Summary
The FAA wants to make sure certain GE airplane engines stay safe by replacing some turbine disks that might have tiny iron bits inside. This affects specific GEnx engine models and means owners will need to swap out these parts soon to keep flying safely. The change helps prevent engine problems and keeps everyone in the sky secure, with some costs expected for the replacements.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Reduces risk of engine failure
The proposed AD aims to address an unsafe condition by removing HPT stage 1 and stage 2 disks suspected to contain iron inclusion, which helps prevent engine problems on the listed GEnx engine models. That safety action is intended to keep passengers, crew, and aircraft operating safely by reducing the risk of engine issues.
Required turbine-disk replacements
The FAA proposes an airworthiness directive that would require replacement of affected high-pressure turbine (HPT) stage 1 and HPT stage 2 disks with parts eligible for installation on certain General Electric GEnx engines (including multiple GEnx-1B64, GEnx-1B67, GEnx-1B70 series, GEnx-1B70C, GEnx-1B74/75, GEnx-1B76 series, and GEnx-2B67/P models). The directive is prompted by a manufacturer investigation that found those disks were made from powder metal suspected to contain iron inclusion, and owners/operators would need to swap the affected parts to comply, with replacement costs expected.
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