# Airworthiness Directives; Boeing Model 737-600, -700, -700IGW, and -800 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 1999-02-04 · Effective 1999-02-19 · 64 FR 5590
## Document
- **Document number:** 99-2495
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 64 FR 5590
- **Publication date:** 1999-02-04
- **Effective date:** 1999-02-19
- **FAA docket:** Docket No. 98-NM-362-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-600, -700, -700IGW, and -800 series airplanes. This action requires repetitive inspections to detect discrepancies of the quick-disconnect coupling on the fuel hose, located at the fan case firewall; corrective action, if necessary; and installation of a clamp shell on the coupling to prevent separation of the coupling halves. This amendment is prompted by a report that a quick-disconnect coupling on the fuel hose on an in-service airplane was found loose and leaking fuel. The actions specified in this AD are intended to detect and correct excessive wear of the quick-disconnect coupling on the fuel hose, which could result in major fuel leakage, fire in the engine nacelle, and consequent loss of thrust from the affected engine.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/02/04/99-2495/airworthiness-directives-boeing-model-737-600--700--700igw-and--800-series-airplanes)
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