# Proposed AD FAA-2021-1180: Airbus Helicopters Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-06-01
- Products: Airbus Helicopters Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 14, 2022, 87 FR 2368
- Comments due: February 28, 2022
- Became: [AD 2022-06-01](https://openairdocs.org/ad/2022-06-01)
- Docket: FAA-2021-1180 (https://www.regulations.gov/docket/FAA-2021-1180, where comments are filed)
- Project: MCAI-2021-00794-R
- FR document: 2022-00358
- Official PDF: https://openairdocs.org/files/sha256/5d/0f/5d0f6093d9f4c498784252de1e1a618f834332d3491753a4ab74b3e6f738b623 (from https://www.govinfo.gov/content/pkg/FR-2022-01-14/pdf/2022-00358.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/01/14/2022-00358/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-00358-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-1180

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-3 helicopters. This proposed AD was prompted by reports of a main rotor (M/R) blade lead-lag damper in a tilted position. This proposed AD would require 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 proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jan 14, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-00358, comments due Feb 28, 2022 (https://www.federalregister.gov/documents/2022/01/14/2022-00358/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)

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