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Federal Register #20260809

FAA Airworthiness Directives for Boeing 757 and Airbus MBB-BK117 D3: Maintenance Program Revisions Required

Buyer

Federal Aviation Administration, Department of Transportation

Posted

April 29, 2026

Identifier

20260809

NAICS

488190

This summary covers new airworthiness directives (ADs) issued by the Federal Aviation Administration (FAA) for specific aircraft models to address critical safety concerns:

  • Government Buyer

    • Federal Aviation Administration (FAA), Department of Transportation

  • OEMs and Vendors

    • The Boeing Company (Boeing 757-200 and 757-300 series airplanes)
    • Aviation Partners Boeing (provider of supplemental type certificate ST01518SE and maintenance planning data)
    • Airbus Helicopters Deutschland GmbH (MBB-BK117 D3 helicopters)

  • Products/Services Requested

    • Revision of maintenance or inspection programs for:
    • Boeing 757-200 and 757-300 series airplanes modified with Aviation Partners Boeing STC ST01518SE (with or without blended or scimitar blended winglets)
      • Incorporation of Aviation Partners Boeing AP57.20604.2 and AP57.30604.2 Supplements to D622N0019, and AP57.20604.2DTR and AP57.30604.2DTR documents
      • Affects 156 U.S.-registered Boeing 757-200 aircraft
    • Airbus Helicopters Deutschland GmbH MBB-BK117 D3 helicopters
      • Inspection and compliance for rotor hub-shaft parts (part numbers D623M1501203 and D623M1501204) per EASA Emergency AD 20260078E

  • Unique or Notable Requirements

    • Mandated updates to maintenance/inspection programs to address fatigue cracking and rotor hub-shaft cracking
    • Strict compliance with OEM-provided maintenance planning data and damage tolerance rating documents
    • No alternative actions or intervals permitted unless specifically approved
    • Reporting requirements for findings and compliance
    • These are regulatory safety actions, not procurement of new products or services

  • Key Locations

    • FAA Aviation Safety Engineer Offices (Westbury, NY; Lakewood, CA)
    • FAA Airworthiness Products Section, Operational Safety Branch (Fort Worth, TX; Des Moines, WA)
    • U.S. Department of Transportation Docket Operations (Washington, DC)
    • Aviation Partners Boeing (Tukwila, WA)

Description

The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757-200 and -300 series airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. It requires revising the existing maintenance or inspection program to incorporate these new or more restrictive airworthiness limitations. The AD addresses fatigue cracking on the wing and winglet, which could affect the structural integrity of the airplane if not addressed. The AD is effective June 3, 2026.

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