# Airworthiness Directives; Rolls-Royce Corporation Turbofan Engines
> **Rule** · Final rule. · Published 2017-06-13 · Effective 2017-07-18 · 82 FR 26985
## Document
- **Document number:** 2017-12077
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Corporation Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 26985
- **Publication date:** 2017-06-13
- **Effective date:** 2017-07-18
- **FAA docket:** Docket No. FAA-2016-9553
## Abstract

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 turbofan engines. This AD was prompted by analysis and by cracks found in the high- pressure turbine (HPT) wheel during an inspection. This AD requires replacement of the affected HPT wheels at new, lower life limits. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/06/13/2017-12077/airworthiness-directives-rolls-royce-corporation-turbofan-engines)
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