# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2017-02-10 · Effective 2017-03-17 · 82 FR 10258
## Document
- **Document number:** 2017-01824
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 10258
- **Publication date:** 2017-02-10
- **Effective date:** 2017-03-17
- **FAA docket:** Docket No. FAA-2016-6670
## Abstract

We are superseding Airworthiness Directive (AD) 2013-19-04 for certain The Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes. AD 2013-19-04 required repetitive inspections for cracking of the skin around the fasteners common to the ends of certain bulkhead chords, and related investigative actions and corrective actions if necessary; and provided an optional terminating modification. This new AD reduces the inspection threshold and repetitive inspection intervals. This AD was prompted by a report of cracks found in the skin at fasteners of certain bulkhead chords. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/02/10/2017-01824/airworthiness-directives-the-boeing-company-airplanes)
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