# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2018-05-04 · Effective 2018-06-08 · 83 FR 19615
## Document
- **Document number:** 2018-09218
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 19615
- **Publication date:** 2018-05-04
- **Effective date:** 2018-06-08
- **FAA docket:** Docket No. FAA-2017-0776
## Abstract

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-200, -300, -400, and -500 series airplanes. This AD was prompted by reports of cracks in the frame web common to the stringer ties adjacent to the air-conditioning support brackets. This AD requires an inspection of the frame for any air- conditioning bracket assembly or intercostal, and, depending on the results, repetitive inspections of the frame web for cracking of certain locations, and applicable on-condition actions. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/05/04/2018-09218/airworthiness-directives-the-boeing-company-airplanes)
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