Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Jan. 26, 2026. Document 2026-01464. Updated Nov. 15, 2026.

What it does

The FAA proposes to adopt 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 proposed 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 proposed AD would require modifying and re-identifying the affected part or replacing the affected part with a serviceable part. This proposed AD would also prohibit installing an affected part on any helicopter unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What it would change

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Before this

612 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Since then:

What happens next and when

The FAA must receive comments on this NPRM by March 12, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-01464
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	Jan. 26, 2026
Comments close	March 12, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-0730

Source: the Federal Register (public domain). The document in the Federal Register