# Airworthiness Directives; Hamilton Sundstrand Corporation Propellers
> **Rule** · Final rule. · Published 2023-09-15 · Effective 2023-10-20 · 88 FR 63513
## Document
- **Document number:** 2023-19932
- **Category:** airworthiness
- **Manufacturer:** Hamilton Sundstrand Corporation
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 88 FR 63513
- **Publication date:** 2023-09-15
- **Effective date:** 2023-10-20
- **FAA docket:** Docket No. FAA-2023-1398
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Hamilton Sundstrand Corporation (Hamilton Sundstrand) Model 14SF-17 and 14SF-19 propellers. This AD was prompted by a report of an auxiliary motor and pump failing to feather a propeller in flight. This AD requires replacement of a certain auxiliary motor and pump. This AD also prohibits installation of a certain auxiliary motor and pump on any propeller. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/09/15/2023-19932/airworthiness-directives-hamilton-sundstrand-corporation-propellers)
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