AD 2026-09-08: Airbus Helicopters Deutschland GmbH (AHD) Helicopters

What the FAA requires

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 C-2 and MBB- BK 117 D-2 helicopters. This AD was prompted by a determination that a certain part-numbered standard MS18027 type hook may be subject to localized yielding in the mating threads when assembled to higher assembly torques. This AD requires modifying and re-identifying the affected part or replacing the affected part with a serviceable part. This AD also prohibits installing an affected part on any helicopter unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.

Read the full directive on the Federal Register →

Applicability

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. (d) Subject Joint Aircraft System Component (JASC) Code 2500, Cabin Equipment/Furnishings. (e) 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. (f) Compliance Comply with this AD

Part numbers this directive names (4)

Extracted from the directive text. For each: the NSN cross-reference where one exists, sellers listing it here, and open DLA solicitations on the NSN.