# Proposed AD FAA-2021-0578: Leonardo S.p.a. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-20-03
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 23, 2021, 86 FR 38950
- Comments due: September 7, 2021
- Became: [AD 2021-20-03](https://openairdocs.org/ad/2021-20-03)
- Docket: FAA-2021-0578 (https://www.regulations.gov/docket/FAA-2021-0578, where comments are filed)
- Project: 2018-SW-084-AD
- FR document: 2021-15555
- Official PDF: https://openairdocs.org/files/sha256/24/0d/240d8907ceed3563276d4433d2876b69da52d08301acf98f4135afe795bf0659 (from https://www.govinfo.gov/content/pkg/FR-2021-07-23/pdf/2021-15555.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/07/23/2021-15555/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6E9125E269D177538625871B0056112B.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0578

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a Model AW169 helicopters. This proposed AD was prompted by reports of in-flight pilot collective stick oscillation. This proposed AD would require a one-time measurement of the friction of the pilot collective stick assembly to verify that it is within the allowable range and, depending on findings, making an adjustment to restore the acceptable level of friction, as specified in a European Aviation Safety Agency (now 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

- Jul 23, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-15555, comments due Sep 7, 2021 (https://www.federalregister.gov/documents/2021/07/23/2021-15555/airworthiness-directives-leonardo-spa-helicopters)

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