# Airworthiness Directives; Rolls-Royce Corporation (Type Certificate Previously Held by Allison Engine Company) Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2020-07-30 · Effective 2020-08-14 · 85 FR 45769
## Document
- **Document number:** 2020-16680
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Corporation (Type Certificate Previously Held by Allison
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 85 FR 45769
- **Publication date:** 2020-07-30
- **Effective date:** 2020-08-14
- **FAA docket:** Docket No. FAA-2020-0679
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 3007A, AE 3007A1, AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 3007A1E, AE 3007A1P, and AE 3007A3 model turbofan 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 affected 3rd-stage compressor wheels. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/07/30/2020-16680/airworthiness-directives-rolls-royce-corporation-type-certificate-previously-held-by-allison-engine)
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