# Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
> **Rule** · Final rule. · Published 2018-01-29 · Effective 2018-03-05 · 83 FR 3941
## Document
- **Document number:** 2018-01572
- **Category:** airworthiness
- **Manufacturer:** Sikorsky
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 3941
- **Publication date:** 2018-01-29
- **Effective date:** 2018-03-05
- **FAA docket:** Docket No. FAA-2017-0896
## Abstract

We are superseding Airworthiness Directive (AD) 2017-07-02 for Sikorsky Aircraft Corporation (Sikorsky) Model 269D and Model 269D Configuration A helicopters. AD 2017-07-02 required reducing the life limit of and inspecting certain drive shafts. This new AD retains the requirements of AD 2017-07-02 and requires repeating the inspections. The actions of this AD are intended to detect and prevent an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/01/29/2018-01572/airworthiness-directives-sikorsky-aircraft-corporation-helicopters)
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