Airworthiness directives › 2026-17-02
AD 2026-17-02 Airworthiness Directives; The Boeing Company Airplanes
Models named: 787-8, 787-9, 787-10. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin B787-81205-SB570048-00 RB, Issue 001, dated August 11, 2025.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB570048-00 RB, Issue 001, dated August 11, 2025, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB570048-00 RB, Issue 001, dated August 11, 2025. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB570048-00, Issue 001, dated August 11, 2025, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB570048-00 RB, Issue 001, dated August 11, 2025.
Unsafe condition
This AD was prompted by a Boeing investigation for manufacturing errors and excessive preload forces at the lower side of body splice plates common to the lower outboard wing skins. That investigation concluded that shim gaps may have exceeded engineering allowances and high pull up forces on the components may cause fatigue cracks to form at the fastener holes. The FAA is issuing this AD to address improper shim gaps that may lead to fatigue cracks. The unsafe condition, if not addressed, could result in undetected fatigue cracks that can grow to weaken primary wing structure until it cannot sustain limit load and result in subsequent loss of continued safe flight and landing.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1