# Airworthiness Directives; Boeing Model 737-300, -400, -500, -600, -700, and -800 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2000-01-14 · Effective 2000-01-31 · 65 FR 2285
## Document
- **Document number:** 00-876
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 65 FR 2285
- **Publication date:** 2000-01-14
- **Effective date:** 2000-01-31
- **FAA docket:** Docket No. 99-NM-342-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-300, -400, -500, -600, -700, and -800 series airplanes. This action requires a one-time detailed visual inspection of certain wire bundles and hydraulic hoses for the electric motor driven pump (EMDP) for hydraulic system ``B'' located in the right main wheel well to detect discrepancies; and corrective actions, if necessary. This amendment is prompted by a report that the wire bundle to the EMDP had been chafed by the pressure hose for hydraulic system ``B'' on a Model 737-700 series airplane, and reports of failed or damaged case drain or pressure hoses on the EMDP for hydraulic system ``B'' on Model 737-400 series airplanes. The actions specified in this AD are intended to prevent electrical arcing due to chafing between certain hydraulic hoses and adjacent wire bundles, which could result in a consequent increased risk of fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/01/14/00-876/airworthiness-directives-boeing-model-737-300--400--500--600--700-and--800-series-airplanes)
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