Federal Register #2026-16389

FAA Airworthiness Directive: Inspection and Maintenance for Boeing 787 Vertical Fin Bolt Holes

The Federal Aviation Administration (FAA), under the Department of Transportation, is proposing a new airworthiness directive (AD) for Boeing 787 series aircraft. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEM Highlight: - Boeing is the sole Original Equipment Manufacturer (OEM) referenced - Products/Services Requested: - Inspection and maintenance services for Boeing 787-8, 787-9, and 787-10 vertical fin tension bolt holes - Review of maintenance records for bolt replacement and sealant application - On-condition actions including: - Application of sealant - Installation of new vertical fin tension bolts and barrel nuts - Revision of maintenance programs - Repairs as needed - Notable Requirements: - Compliance with Boeing Alert Requirements Bulletin B78781205SB55001000 RB, Issue 002 - Use of FAA-approved repair methods - Reduced compliance times compared to previous directives - Specific review of sealant application methods - Estimated affected fleet: 116 Boeing 787 aircraft - No specific part numbers or quantities for individual components provided

Description

The Federal Aviation Administration (FAA) proposes to supersede Airworthiness Directive (AD) 2022-15-01, which applies to certain Boeing Model 787-8, 787-9, and 787-10 airplanes. The proposed AD requires inspections, review of maintenance records, and on-condition actions to address corrosion and bolt installation issues in the vertical fin tension bolt holes. The FAA has determined that compliance times must be reduced and that additional reviews of sealant application methods are necessary. Comments on the proposed AD are due by September 28, 2026.

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