# Airworthiness Directives; Rolls-Royce plc RB211-524G2, -524G2-T, -524G3, -524G3-T, -524H, -524H-T, -524H2, and -524H2-T Series, and Models RB211 Trent 768-60, 772-60, and 772B-60 Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2003-07-17 · Effective 2003-08-01 · 68 FR 42242
## Document
- **Document number:** 03-18078
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 68 FR 42242
- **Publication date:** 2003-07-17
- **Effective date:** 2003-08-01
- **FAA docket:** Docket No. 2003-NE-20-AD
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) RB211-524G2, -524G2-T, -524G3, -524G3-T, -524H, - 524H-T, -524H2, and -524H2-T series, and models RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines with high pressure compressor (HPC) rotor stage 1 through stage 6 drums, part numbers (P/Ns) FK25502 and FW20195 installed. This AD is prompted by reports of cracks found in loading slots of HPC rotor stage 1 through stage 6 drums. We are issuing this AD to prevent crack initiation and propagation leading to uncontained failure of the HPC rotor stage 1 through stage 6 drum, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/07/17/03-18078/airworthiness-directives-rolls-royce-plc-rb211-524g2--524g2-t--524g3--524g3-t--524h--524h-t--524h2)
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