# Airworthiness Directives; CFM International S.A. Turbofan Engines
> **Rule** · Final rule. · Published 2013-12-30 · Effective 2014-02-03 · 78 FR 79295
## Document
- **Document number:** 2013-30862
- **Category:** airworthiness
- **Manufacturer:** CFM International S.A. Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 79295
- **Publication date:** 2013-12-30
- **Effective date:** 2014-02-03
- **FAA docket:** Docket No. FAA-2013-0407
## Abstract

We are adopting a new airworthiness directive (AD) for all CFM International (CFM) S.A. CFM56-3 and CFM56-7B series turbofan engines with certain accessory gearboxes (AGBs) not equipped with a handcranking pad "oil dynamic seal" assembly. This AD was prompted by 42 events of total loss of engine oil from CFM56 series turbofan engines while in flight. This AD requires an independent inspection to verify re-installation of the handcranking pad cover after removal of the pad cover for maintenance until installation of a handcranking pad oil dynamic seal assembly. We are issuing this AD to prevent loss of engine oil while in flight, which could result in engine failure, loss of thrust control, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/12/30/2013-30862/airworthiness-directives-cfm-international-sa-turbofan-engines)
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