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Rule 4 Mar 2025 incorporation by reference, safety, faa, aircraft engines, airworthiness directives, air transportation, regulatory compliance, aviation safety, aviation, aircraft, maintenance

✈️Airworthiness Directives for CFM Engines

The FAA is adopting a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) Model LEAP-1A, LEAP-1B, and LEAP- 1C engines. This AD was prompted by a manufacturer investigation that revealed a quality escape for low-pressure turbine (LPT) disks made from forgings with nonconforming grain size. This AD requires removal and replacement of the LPT stage 4 and stage 5 disks. The FAA is issuing this AD to address the unsafe condition on these products.

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Regulatory Requirements, Financial Impact, Aviation Safety 30 Jan 2025 compliance, faa, safety, aircraft, aviation safety, incorporation by reference, air transportation, airworthiness directive, general electric, aircraft engines

✈️New FAA Airworthiness Directive for GE CF6-80E1A2 and A3 Engines

The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) Model CF6-80E1A2, CF6-80E1A3, CF6-80E1A4, and CF6-80E1A4/B engines. This proposed AD was prompted by a manufacturer investigation that revealed certain high-pressure turbine (HPT) stage 1 and HPT stage 2 disks were manufactured from powder metal material suspected to contain iron inclusion. This proposed AD would require replacement of affected HPT stage 1 and HPT stage 2 disks with parts eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.

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