Federal Register #2026-19956

FAA Airworthiness Directives for Boeing 787 and MD Helicopters – Safety Compliance Required

This regulatory action from the Federal Aviation Administration (FAA) addresses operational safety for specific aircraft and helicopters: - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs Highlighted: - The Boeing Company - Rolls-Royce Deutschland Ltd & Co KG - MD Helicopters, LLC - Products/Services Impacted: - Boeing 787-8 and 787-9 airplanes with Rolls-Royce Trent 1000 series engines - Prohibition on dispatch under MMEL item 75-33-01 (Engine Intermediate Pressure Bleed Valves) - Applies to 16 U.S. airplanes - MD Helicopters Model 369 series - Repetitive inspections and possible part replacements for torque tube assembly and roller bearings - Unique/Notable Requirements: - No procurement of products or services; this is a regulatory safety directive - Compliance required with dispatch prohibition and inspection schedules - Potential for alternative methods of compliance (AMOCs) as approved by the FAA - Focus on preventing loss of engine thrust control (Boeing) and torque tube assembly failure (MD Helicopters) - Technical Details Accessible to Business Readers: - The directive targets specific engine variants (Trent 1000-A, A2, AE, AE2, C, C2, CE, CE2, D, D2, E, G, G2, H, H2, J2, K2, L2) - MD Helicopters directive replaces a prior AD and mandates ongoing inspections every 100 flight hours or 12 months

Description

The FAA is adopting a new airworthiness directive (AD) for certain Boeing 787-8 and 787-9 airplanes equipped with specific Rolls-Royce Deutschland engines. This AD prohibits dispatching an airplane under the operational procedures of the operator's minimum equipment list item corresponding to MMEL item 75-33-01 due to lack of data substantiating engine operability under these conditions. The directive addresses the risk of loss of engine thrust control and consequent loss of control of the airplane. Comments on this AD are invited until November 13, 2026.

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