# Airworthiness Directives; Robinson Helicopter Company Helicopters
> **Rule** · Final rule. · Published 2022-09-15 · Effective 2022-10-20 · 87 FR 56571
## Document
- **Document number:** 2022-19936
- **Category:** airworthiness
- **Manufacturer:** Robinson Helicopter Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 56571
- **Publication date:** 2022-09-15
- **Effective date:** 2022-10-20
- **FAA docket:** Docket No. FAA-2022-0872
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2021-19- 08, which applied to certain Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters. AD 2021-19-08 required checking each tail rotor blade (blade) for any crack and removing any cracked blade from service. AD 2021-19-08 also required removing all affected blades from service and prohibited installing any affected blade on any helicopter. Since the FAA issued AD 2021-19-08, it was determined that an additional model helicopter and additional blades are affected by the unsafe condition. This AD requires the same actions as AD 2021-19- 08 and adds certain Robinson Model R66 helicopters to the applicability and adds additional part-numbered and serial-numbered blades to the applicability. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/09/15/2022-19936/airworthiness-directives-robinson-helicopter-company-helicopters)
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