Airworthiness directives › 2026-09-08
AD 2026-09-08 Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Models named: MBB-BK 117 C-2, MBB-BK 117 D-2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 C-2 and MBB-BK 117 D-2 helicopters, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2025-0188, dated September 1, 2025 (EASA AD 2025-0188).
Unsafe condition
This AD was prompted by the determination that the standard MS18027 type hook may be subject to localized yielding in the mating threads when assembled to higher assembly torques. The FAA is issuing this AD to prevent failure of the hook. The unsafe condition, if not addressed, could result in failure of the large hook damper assembly, which could result in loss of the hoist load and injury to persons.
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