# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2018-01-12 · Effective 2018-02-16 · 83 FR 1529
## Document
- **Document number:** 2018-00256
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 1529
- **Publication date:** 2018-01-12
- **Effective date:** 2018-02-16
- **FAA docket:** Docket No. FAA-2017-0629
## Abstract

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of fatigue cracking in the frame outboard chord and in the radius of the auxiliary chord at a certain area. This AD requires inspections to detect this cracking, and corrective action if necessary. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/01/12/2018-00256/airworthiness-directives-the-boeing-company-airplanes)
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