# Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
> **Rule** · Final rule. · Published 2022-02-10 · Effective 2022-03-17 · 87 FR 7701
## Document
- **Document number:** 2022-02757
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 7701
- **Publication date:** 2022-02-10
- **Effective date:** 2022-03-17
- **FAA docket:** Docket No. FAA-2021-1007
## Abstract

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 report that a collective bellcrank-K was found incorrectly installed on a helicopter. This AD requires inspecting the collective bellcrank-K to determine if it is correctly installed and has a correct position marking and, depending on the findings, applicable corrective actions, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD also allows installation of an affected collective bellcrank-K, provided certain instructions are followed. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/02/10/2022-02757/airworthiness-directives-airbus-helicopters-deutschland-gmbh-ahd-helicopters)
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