# Airworthiness Directives; Honeywell International Inc. Turboprop and Turboshaft Engines
> **Rule** · Final rule. · Published 2016-09-30 · Effective 2016-11-04 · 81 FR 67100
## Document
- **Document number:** 2016-23263
- **Category:** airworthiness
- **Manufacturer:** Honeywell International Inc. Turboprop and Turboshaft
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 67100
- **Publication date:** 2016-09-30
- **Effective date:** 2016-11-04
- **FAA docket:** Docket No. FAA-2015-4866
## Abstract

We are adopting a new airworthiness directive (AD) for certain Honeywell International Inc. (Honeywell) TPE331 model turboprop engines and TSE331-3U model turboshaft engines. This AD was prompted by the discovery of cracks in a 2nd stage compressor impeller during a routine shop visit. This AD requires removal of the 2nd stage compressor impeller. We are issuing this AD to prevent failure of the compressor impeller, uncontained part release, damage to the engine, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/09/30/2016-23263/airworthiness-directives-honeywell-international-inc-turboprop-and-turboshaft-engines)
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