# Airworthiness Directives; Rolls-Royce Limited, Aero Division- Bristol, S.N.E.C.M.A Olympus 593 Series Turbojet Engines
> **Rule** · Final rule; request for comments. · Published 1998-06-25 · Effective 1998-07-10 · 63 FR 34578
## Document
- **Document number:** 98-16467
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 63 FR 34578
- **Publication date:** 1998-06-25
- **Effective date:** 1998-07-10
- **FAA docket:** Docket No. 98-ANE-15-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce Limited, Aero Division-Bristol, S.N.E.C.M.A Olympus 593 series turbojet engines. This action requires initial and repetitive visual inspections of the low pressure (LP) shaft signal system for cable wear and refurbishment of the LP shaft signal system at when the cable is found frayed, or at every engine shop visit, whichever occurs first. This amendment is prompted by reports of frayed rear cables in the LP shaft signal system. The actions specified in this AD are intended to prevent LP shaft signal system failure, which could result in an LP turbine overspeed, burst, uncontained engine failure, and damage to the aircraft in the event of a LP shaft failure.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/06/25/98-16467/airworthiness-directives-rolls-royce-limited-aero-division--bristol-snecma-olympus-593-series)
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