# Airworthiness Directives; CFM International S.A. Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2017-11-30 · Effective 2017-12-15 · 82 FR 56723
## Document
- **Document number:** 2017-25719
- **Category:** airworthiness
- **Manufacturer:** CFM International S.A. Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 56723
- **Publication date:** 2017-11-30
- **Effective date:** 2017-12-15
- **FAA docket:** Docket No. FAA-2017-1044
## Abstract

We are adopting a new airworthiness directive (AD) for certain CFM International S.A. (CFM) LEAP-1A turbofan engines. This AD requires removal, inspection, rework, and re-identification of the high-pressure turbine (HPT) stage 2 disk, part number (P/N) 2466M52G03. This AD was prompted by a quality escape at the manufacturer that resulted in cracks appearing during forging of the HPT stage 2 disks. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/11/30/2017-25719/airworthiness-directives-cfm-international-sa-turbofan-engines)
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