# Airworthiness Directives; the Boeing Company Airplanes
> **Rule** · Final rule. · Published 2016-02-04 · Effective 2016-03-10 · 81 FR 5893
## Document
- **Document number:** 2016-01827
- **Category:** airworthiness
- **Manufacturer:** the Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 5893
- **Publication date:** 2016-02-04
- **Effective date:** 2016-03-10
- **FAA docket:** Docket No. FAA-2015-1983
## 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 a report of a crack of the forward leg of the left front spar lower chord and cracks on the lower wing skin at three fastener holes common to the nacelle outboard side load fitting. This AD requires repetitive inspections for cracks on the front spar lower chord, inspar skin, and wing skin, and corrective action if necessary. We are issuing this AD to detect and correct fatigue cracking of the forward leg of the front spar lower chord, inspar skin, and wing skin common to the nacelle outboard side load fitting, which could adversely affect the structural integrity of the wing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/02/04/2016-01827/airworthiness-directives-the-boeing-company-airplanes)
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