# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2019-05-13 · Effective 2019-06-17 · 84 FR 20772
## Document
- **Document number:** 2019-09747
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 84 FR 20772
- **Publication date:** 2019-05-13
- **Effective date:** 2019-06-17
- **FAA docket:** Docket No. FAA-2018-0901
## Abstract

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports that frame web and frame integral inboard chord cracking is occurring on multiple airplanes in multiple locations below the passenger floor. This AD requires repetitive detailed, general visual, and high frequency eddy current (HFEC) inspections of the section 43 lower lobe frames at certain stations; an inspection to determine if certain repairs are installed; 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/2019/05/13/2019-09747/airworthiness-directives-the-boeing-company-airplanes)
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