# Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
> **Rule** · Final rule. · Published 2020-08-13 · Effective 2020-09-17 · 85 FR 49233
## Document
- **Document number:** 2020-17682
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 49233
- **Publication date:** 2020-08-13
- **Effective date:** 2020-09-17
- **FAA docket:** Docket No. FAA-2020-0418
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-2 helicopters. This AD was prompted by the discovery that certain longitudinal trim actuators, lateral trim actuators, and yaw trim actuators, which are certified for installation on MBB-BK 117 C-2 helicopters, were erroneously listed as eligible for installation on MBB-BK 117 D-2 helicopters. This AD requires removing the affected parts from service and prohibits installing the affected parts on MBB- BK 117 D-2 helicopters. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/08/13/2020-17682/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)
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