# Airworthiness Directives; Rolls-Royce Corporation (Type Certificate Previously Held by Allison Engine Company) Turboprop Engines
> **Rule** · Final rule. · Published 2021-12-28 · Effective 2022-02-02 · 86 FR 73658
## Document
- **Document number:** 2021-28136
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Corporation (Type Certificate Previously Held by Allison
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 73658
- **Publication date:** 2021-12-28
- **Effective date:** 2022-02-02
- **FAA docket:** Docket No. FAA-2021-0874
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 2100D3 model turboprop engines. This AD was prompted by an in-flight shutdown (IFSD) of an engine and subsequent investigation by the manufacturer that revealed a crack in the 3rd-stage compressor wheel. This AD requires replacement of the affected 3rd-stage compressor wheel. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/12/28/2021-28136/airworthiness-directives-rolls-royce-corporation-type-certificate-previously-held-by-allison-engine)
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