# Special Conditions: GE Aviation CT7-2E1 Turboshaft Engine Model
> **Rule** · Final special conditions. · Published 2013-03-12 · Effective 2013-04-11 · 78 FR 15597
## Document
- **Document number:** 2013-05676
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions.
- **Citation:** 78 FR 15597
- **Publication date:** 2013-03-12
- **Effective date:** 2013-04-11
- **FAA docket:** Docket No. FAA-2012-0745
## Abstract

These final special conditions are issued for the General Electric Aviation (GE) CT7-2E1 engine model. This engine model will have a novel or unusual design feature, which is a combination of two existing ratings into a new rating called "flat 30-second and 2-minute OEI" rating. This rating is intended for the continuation of flight of a multi-engine rotorcraft after one engine becomes inoperative. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These final special conditions contain the additional safety standards the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/03/12/2013-05676/special-conditions-ge-aviation-ct7-2e1-turboshaft-engine-model)
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