# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2018-09-07 · Effective 2018-09-24 · 83 FR 45333
## Document
- **Document number:** 2018-19282
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 45333
- **Publication date:** 2018-09-07
- **Effective date:** 2018-09-24
- **FAA docket:** Docket No. FAA-2018-0777
## Abstract

We are adopting a new airworthiness directive (AD) for all General Electric Company (GE) GE90-76B, GE90-77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines with full authority digital engine control (FADEC) software, version 9.3.2.4 or earlier, installed. This AD requires upgrading the FADEC software to a software version eligible for installation. This AD was prompted by an ice-crystal icing (ICI) event that caused damage to both engines, a single engine stall, and subsequent engine shutdown. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/09/07/2018-19282/airworthiness-directives-general-electric-company-turbofan-engines)
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