# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule. · Published 2020-10-01 · Effective 2020-11-05 · 85 FR 61811
## Document
- **Document number:** 2020-21484
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 61811
- **Publication date:** 2020-10-01
- **Effective date:** 2020-11-05
- **FAA docket:** Docket No. FAA-2020-0443
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all General Electric Company (GE) GEnx-1B64, -1B64/P1, -1B64/P2, -1B67, - 1B67/P1, -1B67P2, -1B70, -1B70/75/P1, -1B70/75/P2, -1B70/P1, -1B70/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, -1B74/75/P2, -1B76/P2, and -1B76A/P2 model turbofan engines. This AD was prompted by reports of combustor case burn-through. This AD requires installation of electronic engine control (EEC) software, version B205 or later. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/10/01/2020-21484/airworthiness-directives-general-electric-company-turbofan-engines)
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