# Airworthiness Directives; McCauley Propeller Systems Model 4HFR34C653/L106FA Propellers
> **Rule** · Final rule. · Published 2010-07-13 · Effective 2010-08-17 · 75 FR 39801
## Document
- **Document number:** 2010-16615
- **Category:** airworthiness
- **Manufacturer:** McCauley
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 75 FR 39801
- **Publication date:** 2010-07-13
- **Effective date:** 2010-08-17
- **FAA docket:** Docket No. FAA-2007-29176
## Abstract

The FAA is adopting a new airworthiness directive (AD) for McCauley Propeller Systems model 4HFR34C653/L106FA propellers. This AD requires a onetime fluorescent penetrant inspection (FPI) and eddy current inspection (ECI) of the propeller hub for cracks. This AD results from reports of 10 hubs found cracked during propeller overhaul. We are issuing this AD to prevent failure of the propeller hub, which could cause blade separation, damage to the airplane, and loss of control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/07/13/2010-16615/airworthiness-directives-mccauley-propeller-systems-model-4hfr34c653l106fa-propellers)
---
*AI Analytics · CC0 1.0*