# Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
> **Rule** · Final rule. · Published 2022-03-16 · Effective 2022-04-20 · 87 FR 14778
## Document
- **Document number:** 2022-05497
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 14778
- **Publication date:** 2022-03-16
- **Effective date:** 2022-04-20
- **FAA docket:** Docket No. FAA-2021-1180
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-3 helicopters. This AD was prompted by reports of a main rotor (M/R) blade lead-lag damper in a tilted position. This AD requires inspecting the Flex Control Unit (FCU), and corrective actions if necessary, as well as rework and re-identification of the bearing pin, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/03/16/2022-05497/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)
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