# Airworthiness Directives; Rolls-Royce plc Trent 768-60, Trent 772-60, and Trent 772B-60 Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2003-09-09 · Effective 2003-09-24 · 68 FR 53030
## Document
- **Document number:** 03-22888
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 68 FR 53030
- **Publication date:** 2003-09-09
- **Effective date:** 2003-09-24
- **FAA docket:** Docket No. 2003-NE-29-AD
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) Trent 768-60, Trent 772-60, and Trent 772B-60 turbofan engines. This AD requires removal from service of certain part numbers of high pressure (HP) compressor rotor shafts, based on a newly established reduced life limit. This AD is prompted by reports of HP compressor drums with small cracks in blade loading slots found at overhaul inspection. The HP compressor drums are an integral part of the HP compressor rotor shaft. We are issuing this AD to prevent possible uncontained HP compressor drum failure, which could result in damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/09/09/03-22888/airworthiness-directives-rolls-royce-plc-trent-768-60-trent-772-60-and-trent-772b-60-turbofan)
---
*AI Analytics · CC0 1.0*