# Airworthiness Directives; Hamilton Sundstrand Corporation Propellers
> **Rule** · Final rule. · Published 2022-04-22 · Effective 2022-05-27 · 87 FR 24029
## Document
- **Document number:** 2022-08539
- **Category:** airworthiness
- **Manufacturer:** Hamilton Sundstrand Corporation
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 24029
- **Publication date:** 2022-04-22
- **Effective date:** 2022-05-27
- **FAA docket:** Docket No. FAA-2021-0032
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2020-12-07 for certain Hamilton Sundstrand Corporation (Hamilton Sundstrand) 54H model propellers. AD 2020-12-07 required initial and repetitive eddy current inspections (ECI) of certain propeller blades and replacement of the propeller blades that fail the inspection. This AD was prompted by a report of the separation of a 54H60 model propeller blade installed on a United States Marine Corps Reserve (USMCR) KC-130T airplane during a flight in July 2017. This AD requires initial and repetitive ECI of all propeller blades installed on Hamilton Sundstrand 54H60 propeller hubs and replacement of any propeller blade that fails inspection. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/04/22/2022-08539/airworthiness-directives-hamilton-sundstrand-corporation-propellers)
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