# Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop Engines
> **Rule** · Final rule. · Published 2006-07-20 · Effective 2006-08-24 · 71 FR 41121
## Document
- **Document number:** E6-11540
- **Category:** airworthiness
- **Manufacturer:** Honeywell International Inc. TPE331 Series Turboprop
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 71 FR 41121
- **Publication date:** 2006-07-20
- **Effective date:** 2006-08-24
- **FAA docket:** Docket No. FAA-2006-23706
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. TPE331 series turboprop engines with certain part numbers of Woodward fuel control unit (FCU) assemblies installed. This AD requires initial and repetitive dimensional inspections of the fuel control drive, for wear or damage. This AD results from reports of loss of the fuel control drive, leading to engine overspeed, overtorque, overtemperature, uncontained rotor failure, and asymmetric thrust in multi-engine airplanes. We are issuing this AD to prevent destructive overspeed that could result in uncontained rotor failure, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/07/20/E6-11540/airworthiness-directives-honeywell-international-inc-tpe331-series-turboprop-engines)
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