# Airworthiness Directives; Rolls-Royce plc (RR) RB211-22B, RB211-524, and RB211-535 Series Turbofan Engines
> **Rule** · Final rule. · Published 2004-01-23 · Effective 2004-02-27 · 69 FR 3233
## Document
- **Document number:** 04-951
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 3233
- **Publication date:** 2004-01-23
- **Effective date:** 2004-02-27
- **FAA docket:** Docket No. 2001-NE-13-AD
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) RB211-22B, RB211-524, and RB211-535 series turbofan engines. This AD requires the installation of a front engine mount housing and link support assembly that has a serialized, life limited, spherical bearing installed. This AD results from reports of corrosion and fatigue cracks in the mount pins, the spherical bearings, and the support links and their respective spherical bearings. We are issuing this AD to prevent failure of the front engine mount housing and link support assembly due to cracks that could result in loss of the engine.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/01/23/04-951/airworthiness-directives-rolls-royce-plc-rr-rb211-22b-rb211-524-and-rb211-535-series-turbofan)
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