Federal Aviation Administration June 1, 2020 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Pratt & Whitney Turbofan Engines
The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW2037, PW2037M, PW2040, and F117-PW-100 model turbofan engines. This proposed AD was prompted by a report of an uncontained engine failure resulting from cracks in the knife edge of the high-pressure turbine (HPT) 2nd-stage air seal. This proposed AD would require initial and repetitive borescope inspections (BSIs), fluorescent penetrant inspections (FPIs), and visual inspections of the HPT 2nd-stage air seal assembly and, depending on the results of the inspections, replacement of the HPT 2nd-stage air seal assembly with a part eligible for installation. This proposed AD would also require replacement of the affected HPT 2nd-stage air seal assembly, depending on the engine model, at either the next engine shop visit or the next piece-part opportunity. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus SAS Airplanes
The FAA proposes to supersede Airworthiness Directive (AD) 2018-25-02 and AD 2019-23-01, which apply to certain Airbus SAS Model A318 series airplanes; Model A319-111, -112, -113, -114, -115, -131, - 132, and -133 airplanes; Model A320-211, -212, -214, -216, -231, -232, -233, -251N, -252N, and -271N airplanes; and Model A321 series airplanes. Those ADs require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive maintenance requirements and/or airworthiness limitations. Since the FAA issued AD 2018-25-02 and AD 2019-23-01, the agency has determined that new or more restrictive airworthiness limitations are necessary and models need to be added to the applicability. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.
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