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September 26, 2021

AD: Pratt & Whitney Turbofan Engines

AD 2021-20-01 Requires Removal And Replacement Of The HPT 1st-Stage Hub

The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney PW1500G and PW1900G series turbofan engines with a certain high-pressure turbine (HPT) 1st-stage hub or HPT rotor 1st-stage blade retaining plate installed. This AD was prompted by a report from the manufacturer who determined that the HPT 1st-stage hub and HPT rotor 1st-stage blade retaining plate fail to meet the published life-cycle limits for each part. This AD requires removal and replacement of the HPT 1st-stage hub and HPT rotor 1st-stage blade retaining plate prior to reaching certain cycle limits. The FAA is issuing this AD to address the unsafe condition on these products. This AD is e

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AD: Yaborã Industria Aeronáutica S.A.

AD 2021-18-03 Prompted By A Report Of An In-Flight Shutdown Due In Part To Failure In The Low-Pressure Compressor

The FAA is superseding Airworthiness Directive (AD) 2020-26-02, which applied to certain Yaborã Industria Aeronáutica S.A. (type certificate previously held by Embraer S.A.) Model ERJ 190-400 airplanes. AD 2020-26-02 required amending the existing airplane flight manual (AFM) to incorporate a new limitation and revise certain normal procedures. This AD retains those requirements and also requires upgrading the electronic engine control (EEC) software, as specified in an Agência Nacional de Aviação Civil (ANAC) AD, which is incorporated by reference. This AD was prompted by a report of an in-flight shut

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