# Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 Propellers
> **Rule** · Final rule; request for comments. · Published 2006-07-31 · Effective 2006-08-30 · 71 FR 43041
## Document
- **Document number:** E6-12109
- **Category:** airworthiness
- **Manufacturer:** Hamilton Sundstrand Model 14RF-19
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 43041
- **Publication date:** 2006-07-31
- **Effective date:** 2006-08-30
- **FAA docket:** Docket No. FAA-2005-21691
## Abstract

The FAA is superseding an existing airworthiness directive (AD) for Hamilton Sundstrand model 14RF-19 propellers. That AD currently requires replacing certain actuator yokes with improved actuator yokes. This AD requires the same actions. This AD results from the discovery of a part number (P/N) error in the applicability paragraph of AD 2006-12-19. 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/2006/07/31/E6-12109/airworthiness-directives-hamilton-sundstrand-model-14rf-19-propellers)
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