# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2014-03-05 · Effective 2014-04-09 · 79 FR 12368
## Document
- **Document number:** 2014-02521
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 12368
- **Publication date:** 2014-03-05
- **Effective date:** 2014-04-09
- **FAA docket:** Docket No. FAA-2013-0866
## 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 cracks found in the aft support fitting, the rear spar upper chord, and the rear spar web. This AD requires repetitive inspections for cracking of the aft support fitting for the main landing gear (MLG) beam, and the rear spar upper chord and rear spar web in the area of rear spar station (RSS) 224.14; and repair if necessary. We are issuing this AD to detect and correct such cracks, which could grow and result in a fuel leak and possible fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/03/05/2014-02521/airworthiness-directives-the-boeing-company-airplanes)
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