# Proposed AD FAA-2021-0455: Leonardo S.p.a. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-17-16
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 10, 2021, 86 FR 30822
- Comments due: July 26, 2021
- Became: [AD 2021-17-16](https://openairdocs.org/ad/2021-17-16)
- Docket: FAA-2021-0455 (https://www.regulations.gov/docket/FAA-2021-0455, where comments are filed)
- Project: 2018-SW-031-AD
- FR document: 2021-12039
- Official PDF: https://openairdocs.org/files/sha256/04/62/0462d5a5ff2a58e42eebe965b0717baf3498c8de960970713b4dbfbeec2681d2 (from https://www.govinfo.gov/content/pkg/FR-2021-06-10/pdf/2021-12039.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/06/10/2021-12039/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/993EA2715A6E5010862586F000770F09.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0455

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AW189 helicopters. This proposed AD was prompted by fatigue testing and analyses. This proposed AD would require establishing a life limit for a certain part-numbered tail gearbox fitting. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 10, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-12039, comments due Jul 26, 2021 (https://www.federalregister.gov/documents/2021/06/10/2021-12039/airworthiness-directives-leonardo-spa-helicopters)

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