# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2021-09-08 · Effective 2021-10-13 · 86 FR 50219
## Document
- **Document number:** 2021-19243
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 50219
- **Publication date:** 2021-09-08
- **Effective date:** 2021-10-13
- **FAA docket:** Docket No. FAA-2021-0463
## Abstract

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

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/09/08/2021-19243/airworthiness-directives-leonardo-spa-helicopters)
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