# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2012-04-24 · Effective 2012-05-29 · 77 FR 24355
## Document
- **Document number:** 2012-9398
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 24355
- **Publication date:** 2012-04-24
- **Effective date:** 2012-05-29
- **FAA docket:** Docket No. FAA-2011-0644
## Abstract

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD was prompted by reports of cracks found in the Web pockets of the wing center section (WCS) spanwise beams. This AD requires repetitive detailed inspections and high frequency eddy current inspections for cracks of the WCS spanwise beams, and repair if necessary. We are issuing this AD to detect and correct cracking in the WCS spanwise beams, which could result in reduced structural integrity of the wings.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/24/2012-9398/airworthiness-directives-the-boeing-company-airplanes)
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