# Proposed AD FAA-2021-0463: Leonardo S.p.a. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-17-15
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 16, 2021, 86 FR 31992
- Comments due: August 2, 2021
- Became: [AD 2021-17-15](https://openairdocs.org/ad/2021-17-15)
- Docket: FAA-2021-0463 (https://www.regulations.gov/docket/FAA-2021-0463, where comments are filed)
- Project: 2018-SW-050-AD
- FR document: 2021-12515
- Official PDF: https://openairdocs.org/files/sha256/92/71/9271799bcb21f3886ace1e10e04a0cd5a23179d5da6774929f49af8dae3521a6 (from https://www.govinfo.gov/content/pkg/FR-2021-06-16/pdf/2021-12515.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/06/16/2021-12515/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A4E8316F430E4435862586F6006030C8.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0463

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters with certain main rotor blades MRB installed. This proposed AD was prompted by a report of an in-flight loss of a main rotor blade (MRB) tip cap. This proposed AD would require inspecting the MRB tip cap for disbonding. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 16, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-12515, comments due Aug 2, 2021 (https://www.federalregister.gov/documents/2021/06/16/2021-12515/airworthiness-directives-leonardo-spa-helicopters)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.