Federal Register #FAA20264655

FAA Airworthiness Directives for Boeing, Rolls-Royce, and Bombardier Aircraft and Engines

This opportunity summary covers recent airworthiness directives (ADs) issued by the Federal Aviation Administration (FAA) for major commercial aircraft and engine OEMs: - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs Mentioned: - Boeing (aircraft manufacturer) - Rolls-Royce Deutschland Ltd & Co KG (engine manufacturer) - Bombardier (aircraft manufacturer) - Products/Services Affected: - Boeing Model 787-8, 787-9, and 787-10 airplanes - AD addresses uncommanded changes to the mode control panel selected altitude - Reference: Boeing Alert Requirements Bulletin B78781205SB22000400 RB, Issue 001 - Rolls-Royce Deutschland Trent 1000 series engines - AD requires initial and repetitive borescope inspections of high-pressure turbine (HPT) blades for axial cracks - Mandates replacement of HPT blades if cracks are found or life limits are reached - Reference: EASA AD 20250206R1 - Bombardier Model BD700-1A10, BD700-1A11, and BD700-2A12 airplanes - AD requires modification of seat frame fastener joints due to missing Loctite application - Notable Requirements: - No specific part numbers or procurement quantities are listed; these are regulatory compliance actions for operators - ADs incorporate updated service materials and may require use of improved or modified parts as specified by the OEMs - Compliance is mandatory for continued airworthiness; actions include inspections, modifications, and potential part replacements - These directives are regulatory in nature and do not constitute a procurement for new products or services by the government.

Description

The FAA is superseding Airworthiness Directive (AD) 2020-05-01 for all Rolls-Royce Deutschland Ltd & Co KG Model Trent 1000 series engines. The AD requires initial and repetitive borescope inspections (BSI) of the high-pressure turbine (HPT) blades and replacement of blades that fail inspection or reach life limits. Updated service material introduces improved HPT blades and expands inspection areas, adding limits for axial cracks and reducing BSI thresholds. This AD mandates performing BSIs for axial cracks and requires additional inspections or blade replacements based on results, with an optional terminating action for repetitive BSIs. The effective date is June 30, 2026, and comments are due by July 31, 2026.

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