# Airworthiness Directives; Rolls-Royce plc Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2017-04-24 · Effective 2017-05-09 · 82 FR 18849
## Document
- **Document number:** 2017-07983
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 18849
- **Publication date:** 2017-04-24
- **Effective date:** 2017-05-09
- **FAA docket:** Docket No. FAA-2013-1015
## Abstract

We are superseding airworthiness directive (AD) 2017-01-01 for all Rolls-Royce plc (RR) RB211-Trent 970-84, RB211-Trent 970B-84, RB211-Trent 972-84, RB211-Trent 972B-84, RB211-Trent 977-84, RB211- Trent 977B-84, and RB211-Trent 980-84 turbofan engines. AD 2017-01-01 required inspections of the low-pressure turbine (LPT) exhaust case and support assembly or tail bearing housing (TBH) to detect cracks or damage. This AD corrects references to certain service bulletins in the compliance section of AD 2017-01-01. This AD was prompted by reports that references to service bulletins in AD 2017-01-01 are incorrect. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/04/24/2017-07983/airworthiness-directives-rolls-royce-plc-turbofan-engines)
---
*AI Analytics · CC0 1.0*