# Airworthiness Directives; Rolls-Royce plc Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2014-01-08 · Effective 2014-01-23 · 79 FR 1315
## Document
- **Document number:** 2014-00083
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 79 FR 1315
- **Publication date:** 2014-01-08
- **Effective date:** 2014-01-23
- **FAA docket:** Docket No. FAA-2013-1004
## Abstract

We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-524G2-19, RB211-524G3-19, RB211-524H-36, and RB211-524H2-19 turbofan engines. This AD requires a one-time reduction in the cyclic life of certain high-pressure (HP) compressor rotor stage 1 and stage 2 discs, and removal of discs that exceed the reduced cycle life. This AD was prompted by a review by RR of the cyclic life of life-limited parts (LLPs) for RB211-524 series engines. We are issuing this AD to prevent the failure of certain LLPs, which could result in uncontained engine damage and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/01/08/2014-00083/airworthiness-directives-rolls-royce-plc-turbofan-engines)
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