Federal Register #FAA20267233

FAA Proposed Airworthiness Directive for Boeing 787 Aircraft with Rolls Royce Engines

The Federal Aviation Administration (FAA) is proposing a new airworthiness directive for Boeing 787 aircraft with specific Rolls Royce engines. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs Highlighted: - The Boeing Company - Rolls Royce Deutschland Ltd & Co KG - Products/Services Requested: - Inspection or maintenance records check of the right engine to determine the part number of the left fan cowl - Part numbers: 725Z2300307, 725Z2300305, 725Z23005003 - Modification or replacement of the left fan cowl if required - Unique/Notable Requirements: - Addresses an unsafe condition where the left fan cowl of the right engine may not adequately protect critical components from cross engine debris - Applies to Boeing Model 787-8, 787-9, and 787-10 airplanes equipped with Rolls Royce Trent 1000AE3, 1000CE3, 1000D3, 1000G3, 1000H3, 1000J3, and 1000K3 engines - Requirements detailed in Boeing Special Attention Requirements Bulletin B78781205SB54002200 RB, Issue 001 - Aims to prevent potential in-flight dual engine shutdowns due to debris damage - Estimated 22 U.S.-registered aircraft affected

Description

The FAA proposes a new airworthiness directive (AD) for certain Boeing Model 787-8, 787-9, and 787-10 airplanes equipped with specific Rolls Royce Deutschland Ltd & Co KG engines. This AD addresses an unsafe condition where the protection system on the left fan cowl of the right engine does not sufficiently cover components from possible cross engine debris. The directive requires a maintenance records check or inspection of the right engine's left fan cowl part number and applicable on-condition actions, including modification or replacement if necessary. The goal is to prevent damage to critical systems that could lead to an in-flight dual engine shutdown.

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