# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule. · Published 2015-07-20 · Effective 2015-08-24 · 80 FR 42707
## Document
- **Document number:** 2015-17703
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 80 FR 42707
- **Publication date:** 2015-07-20
- **Effective date:** 2015-08-24
- **FAA docket:** Docket No. FAA-2015-0165
## Abstract

We are adopting a new airworthiness directive (AD) for all General Electric Company (GE) GEnx turbofan engine models. This AD was prompted by reports of GEnx-1B and GEnx-2B engines experiencing power loss in ice crystal icing (ICI) conditions. This AD precludes the use of full authority digital engine control (FADEC) software, version B175 or earlier, in GEnx-1B engines, and the use of FADEC software, version C065 or earlier, in GEnx-2B engines. We are issuing this AD to prevent engine failure, loss of thrust control, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/07/20/2015-17703/airworthiness-directives-general-electric-company-turbofan-engines)
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