# Airworthiness Directives; Rolls-Royce plc RB211 Trent 800 Series Turbofan Engines
> **Rule** · Final rule. · Published 2003-07-30 · Effective 2003-09-03 · 68 FR 44610
## Document
- **Document number:** 03-19306
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc RB211 Trent 800 Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 44610
- **Publication date:** 2003-07-30
- **Effective date:** 2003-09-03
- **FAA docket:** Docket No. 2003-NE-03-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to Rolls-Royce plc (RR) RB211 Trent 875-17, Trent 877-17, Trent 884-17, Trent 892-17, Trent 892B-17, and Trent 895-17 turbofan engines with high pressure (HP) compressor rotor rear stage 5 and 6 discs and cone shafts, part numbers (P/Ns) FK25230 and FK27899 installed. This amendment requires removal from service of these HP compressor rotor rear stage 5 and 6 discs and cone shafts, before reaching newly reduced life limits. This amendment is prompted by three reports of crack indications in the stage 5 and stage 6 blade loading slots, found during engine overhaul. We are issuing this AD to prevent stage 5 and 6 disc crack initiation and propagation leading to uncontained disc failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/07/30/03-19306/airworthiness-directives-rolls-royce-plc-rb211-trent-800-series-turbofan-engines)
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