# Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2007-09-21 · Effective 2007-09-26 · 72 FR 53928
## Document
- **Document number:** E7-18436
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 72 FR 53928
- **Publication date:** 2007-09-21
- **Effective date:** 2007-09-26
- **FAA docket:** Docket No. FAA-2007-29089
## Abstract

This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2007-18-52 that was sent previously to all known U.S. owners and operators of Boeing Model 737- 600, -700, -700C, -800, -900, and -900ER series airplanes by individual notices. This AD requires repetitive detailed inspections of the slat track downstop assemblies to verify that proper hardware is installed, one-time torquing of the nut and bolt, and corrective actions if necessary. This AD is prompted by reports of parts coming off the main slat track downstop assemblies. We are issuing this AD to detect and correct loose or missing parts from the main slat track downstop assemblies, which could result in a fuel leak and consequent fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/09/21/E7-18436/airworthiness-directives-boeing-model-737-600--700--700c--800--900-and--900er-series-airplanes)
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