# Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines
> **Rule** · Final rule; request for comments. · Published 2006-09-14 · Effective 2006-09-29 · 71 FR 54195
## Document
- **Document number:** E6-15139
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney Canada Turboprop
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 54195
- **Publication date:** 2006-09-14
- **Effective date:** 2006-09-29
- **FAA docket:** Docket No. FAA-2006-23807
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney Canada (P&WC) Models PW118, PW118A, PW118B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW124B, PW125B, PW127, and PW127E turboprop engines with certain propeller shafts installed. This AD requires before further flight, replacing certain serial-numbered propeller shafts, and performing initial and repetitive visual inspections on others. This AD results from two reports of through-cracks in the propeller shaft. We are issuing this AD to detect through-cracks in the propeller shaft. Through-cracks at the No. 19 bearing area of the propeller shaft could result in uncontained engine failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/09/14/E6-15139/airworthiness-directives-pratt-and-whitney-canada-turboprop-engines)
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