# Airworthiness Directives; Hartzell Engine Technologies Turbochargers
> **Rule** · Final rule; request for comments. · Published 2012-06-11 · Effective 2012-06-26 · 77 FR 34206
## Document
- **Document number:** 2012-13855
- **Category:** airworthiness
- **Manufacturer:** Hartzell
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 77 FR 34206
- **Publication date:** 2012-06-11
- **Effective date:** 2012-06-26
- **FAA docket:** Docket No. FAA-2012-0565
## Abstract

We are adopting a new airworthiness directive (AD) for Cessna 206, 207, and 210 airplanes with Hartzell Engine Technologies (HET) turbochargers, part numbers (P/Ns) 406610-0005 and 406610-9005, installed. This emergency AD was sent previously to all known U.S. owners and operators of these airplanes. This AD requires removing the affected turbochargers from service before further flight. This AD was prompted by a report of an HET turbocharger causing an engine in-flight power rollback. We are issuing this AD to prevent turbocharger bearing seizure, failed turbocharger components, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/06/11/2012-13855/airworthiness-directives-hartzell-engine-technologies-turbochargers)
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