# Airworthiness Directives; General Electric Company CF34 Series Turbofan Engines
> **Rule** · Final rule. · Published 1997-03-26 · Effective 1997-05-27 · 62 FR 14287
## Document
- **Document number:** 97-7597
- **Category:** airworthiness
- **Manufacturer:** General Electric Company CF34 Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 62 FR 14287
- **Publication date:** 1997-03-26
- **Effective date:** 1997-05-27
- **FAA docket:** Docket No. 95-ANE-41
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company CF34 series turbofan engines, that reduces the allowable operating cyclic life limit for affected high pressure compressor (HPC) stage 1 rotor disks. This amendment is prompted by an updated stress and life analysis. The actions specified by this AD are intended to prevent HPC stage 1 rotor disk rupture, engine failure, and damage to the aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/03/26/97-7597/airworthiness-directives-general-electric-company-cf34-series-turbofan-engines)
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