# Airworthiness Directives; Engine Alliance Turbofan Engines
> **Rule** · Final rule. · Published 2016-03-15 · Effective 2016-04-19 · 81 FR 13714
## Document
- **Document number:** 2016-05702
- **Category:** airworthiness
- **Manufacturer:** Engine Alliance Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 13714
- **Publication date:** 2016-03-15
- **Effective date:** 2016-04-19
- **FAA docket:** Docket No. FAA-2015-3713
## Abstract

We are adopting a new airworthiness directive (AD) for certain Engine Alliance (EA) GP7270 turbofan engines. This AD was prompted by reports of the installation of non-conforming honeycomb cartridges in the high-pressure compressor (HPC) adjacent to the HPC rotor stage 2 to 5 spool and stage 7 to 9 spool. This AD requires removal and replacement of the affected HPC rotor stage 2 to 5 and stage 7 to 9 spools and adjacent honeycomb cartridges. We are issuing this AD to prevent failure of the HPC rotor stage 2 to 5 and stage 7 to 9 spools, which could lead to uncontained engine failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/03/15/2016-05702/airworthiness-directives-engine-alliance-turbofan-engines)
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