# Airworthiness Directives; CFM International S.A. Model CFM56 Turbofan Engines
> **Rule** · Final rule; correction. · Published 2012-02-24 · Effective 2012-02-24 · 77 FR 10952
## Document
- **Document number:** 2012-4285
- **Category:** airworthiness
- **Manufacturer:** CFM International S.A. Model CFM56 Turbofan
- **Type:** Rule
- **Action:** Final rule; correction.
- **Citation:** 77 FR 10952
- **Publication date:** 2012-02-24
- **Effective date:** 2012-02-24
- **FAA docket:** Docket No. FAA-2008-1245
## Abstract

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines with certain part number (P/N) and serial number (SN) high-pressure compressor (HPC) 4-9 spools installed. In Table 1 of the AD, the HPC 4-9 spool SN GWN05AMO in the 2nd column of the Table is incorrect. This document corrects that error. In all other respects, the original document remains the same.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/02/24/2012-4285/airworthiness-directives-cfm-international-sa-model-cfm56-turbofan-engines)
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