Federal Register #FAA-2026-2730

FAA Proposes Airworthiness Directives for Boeing 757-300 and Ontic Aircraft Models

The Federal Aviation Administration (FAA), under the Department of Transportation, is proposing new airworthiness directives (ADs) for Boeing 757-300 series airplanes and certain Ontic Engineering and Manufacturing, Inc. aircraft models. - Government Buyer: - Federal Aviation Administration (FAA), Aircraft Certification Service, Integrated Certificate Management Division - OEMs and Vendors: - The Boeing Company (primary OEM for 757-300 series) - Ontic Engineering and Manufacturing, Inc. (for pitch trim actuators) - Products/Services Requested: - For Boeing 757-300 series: - Inspections and maintenance record checks for cracks in upper fuselage frame splices (frames S13 to S14, stations 1380 to 1620) - Repetitive inspections and on-condition repairs as specified in Boeing Alert Requirements Bulletin 75753A0122 RB - Affects 37 U.S.-registered airplanes - For Ontic aircraft: - Repetitive inspections and replacement of pitch trim actuators to address actuator failures - Prohibition on installing unsealed pitch trim actuators - Notable Requirements: - Compliance with Boeing Alert Requirements Bulletin 75753A0122 RB for inspection and repair procedures - Addressing any cracks or repairs as specified by the FAA - For Ontic models, ensuring all pitch trim actuators are properly sealed and functional - No specific product procurement: - This is a regulatory compliance action, not a purchase of goods or services - Key Locations: - FAA offices in Des Moines, WA and Kansas City, MO - Boeing Commercial Airplanes facility in Seal Beach, CA

Description

The FAA proposes a new airworthiness directive (AD) for all Boeing Model 757-300 series airplanes due to a crack growth analysis revealing inadequate inspection opportunities for cracks in the upper frames around the uppermost fastener at fuselage frame splices. The AD requires inspections or maintenance record checks for existing repairs, repetitive inspections of the upper frames, and applicable on-condition actions to address the unsafe condition. Comments on the proposed rule are due by May 18, 2026.

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