# Airworthiness Directives; Rolls-Royce plc Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2017-02-27 · Effective 2017-03-14 · 82 FR 11801
## Document
- **Document number:** 2017-03739
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 11801
- **Publication date:** 2017-02-27
- **Effective date:** 2017-03-14
- **FAA docket:** Docket No. FAA-2016-9510
## Abstract

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan engines. This AD requires initial and repetitive inspections of affected high-pressure turbine (HPT) blades for cracks. This AD was prompted by high engine vibration due to HPT blade deterioration resulting in operational disruptions. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/02/27/2017-03739/airworthiness-directives-rolls-royce-plc-turbofan-engines)
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