# Airworthiness Directives; Boeing Model 767-200, -300, -300F, and -400ER Series Airplanes
> **Rule** · Final rule. · Published 2009-10-29 · Effective 2009-12-03 · 74 FR 55755
## Document
- **Document number:** E9-25916
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 74 FR 55755
- **Publication date:** 2009-10-29
- **Effective date:** 2009-12-03
- **FAA docket:** Docket No. FAA-2009-0314
## Abstract

We are adopting a new airworthiness directive (AD) for certain Boeing Model 767-200, -300, -300F, and -400ER series airplanes. This AD requires an inspection to determine if certain motor operated valve actuators for the fuel tanks are installed, and related investigative and corrective actions if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent an ignition source inside the fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/10/29/E9-25916/airworthiness-directives-boeing-model-767-200--300--300f-and--400er-series-airplanes)
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