# Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 Propellers
> **Rule** · Final rule. · Published 2006-06-13 · Effective 2006-07-18 · 71 FR 34003
## Document
- **Document number:** 06-5284
- **Category:** airworthiness
- **Manufacturer:** Hamilton Sundstrand Model 14RF-19
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 71 FR 34003
- **Publication date:** 2006-06-13
- **Effective date:** 2006-07-18
- **FAA docket:** Docket No. FAA-2005-21691
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Hamilton Sundstrand model 14RF-19 propellers. This AD requires replacing certain actuator yokes with improved actuator yokes. This AD results from certain propeller system actuator yoke arms breaking during flight. We are issuing this AD to prevent actuator yoke arms breaking during flight, which could cause high propeller vibration and contribute to reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/06/13/06-5284/airworthiness-directives-hamilton-sundstrand-model-14rf-19-propellers)
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