# Airworthiness Directives; Boeing Model 737 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2001-04-25 · Effective 2001-05-10 · 66 FR 20733
## Document
- **Document number:** 01-10177
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 737 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 20733
- **Publication date:** 2001-04-25
- **Effective date:** 2001-05-10
- **FAA docket:** Docket No. 2001-NM-94-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to all Boeing Model 737 series airplanes. This action requires revising the Airplane Flight Manual to prohibit extended dry operation of the center tank fuel pumps (with no fuel passing through the pumps). This action is necessary to prevent ignition of fuel vapors due to the generation of sparks and a potential ignition source inside the center tank caused by metal-to-metal contact during dry fuel pump operation, which could result in a fire or explosion of the fuel tank. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/04/25/01-10177/airworthiness-directives-boeing-model-737-series-airplanes)
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