# Proposed AD FAA-2021-0375: Leonardo S.p.a. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-15-09
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 25, 2021, 86 FR 28040
- Comments due: July 9, 2021
- Became: [AD 2021-15-09](https://openairdocs.org/ad/2021-15-09)
- Docket: FAA-2021-0375 (https://www.regulations.gov/docket/FAA-2021-0375, where comments are filed)
- Project: MCAI-2020-01245-R
- FR document: 2021-10908
- Official PDF: https://openairdocs.org/files/sha256/49/7a/497ab20d6f132d7da636100f48abe437399a5560dd72fa397828d24cc4add2f1 (from https://www.govinfo.gov/content/pkg/FR-2021-05-25/pdf/2021-10908.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/25/2021-10908/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BCBD704DB6150693862586E00075E2E4.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0375

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by two events of uncommanded emergency flotation system (EFS) deployment during flight. This proposed AD would require replacing certain part-numbered EFS control panels and prohibit installing them. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 25, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-10908, comments due Jul 9, 2021 (https://www.federalregister.gov/documents/2021/05/25/2021-10908/airworthiness-directives-leonardo-spa-helicopters)

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