Federal Register #AD 2026-14-06

FAA and Transport Canada Mandate Inspections for CFM LEAP1A Engine Blades and Bombardier Aircraft Fasteners

This opportunity summary covers recent Airworthiness Directives (ADs) issued by the Federal Aviation Administration (FAA) and Transport Canada, focusing on safety inspections and maintenance for specific aircraft and engine components. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - Office: Aircraft Certification Service, Continued Operational Safety Branch - Primary OEMs Mentioned: - CFM International (manufacturer of LEAP1A engine components) - Airbus SAS (aircraft platform) - Bombardier (aircraft platform) - Products/Parts Identified: - High-Pressure Turbine (HPT) Rotor Stage 1 Blades for CFM LEAP1A engines - Part numbers: 2747M92P01, 2553M91G03, 2553M91G05, 2553M91G06, 2553M91G07, 2553M91G08 - Slat 2 Cove Rib 6 Bracket Fasteners (Bombardier BD700-2A12) - Services/Inspections Required: - Initial and repetitive borescope inspections (BSIs) of HPT rotor stage 1 blades - Visual inspection of slat 2 cove rib 6 bracket fasteners on Bombardier aircraft - Replacement of HPT rotor stage 1 blades if cracks or deterioration are found - Notable Requirements: - Inspections are especially critical for engines operating in the South Asia region due to accelerated blade deterioration - Compliance with updated service bulletins and reporting of inspection results is mandatory - FAA considers the CFM AD an interim action pending a permanent solution - **No procurement of new products or services is solicited; these are regulatory maintenance requirements for affected operators.

Description

The FAA is superseding Airworthiness Directive (AD) 2025-21-03 for certain CFM International, S.A. LEAP engine models. The directive requires initial and repetitive borescope inspections (BSIs) of the high-pressure turbine (HPT) rotor stage 1 blades, with additional inspections or blade replacements based on inspection results. The updated AD addresses accelerated blade deterioration in engines operating in the South Asia region. The FAA issued this AD to mitigate unsafe conditions that could lead to engine failure.

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