# Airworthiness Directives; the Boeing Company Airplanes
> **Rule** · Final rule. · Published 2014-08-05 · Effective 2014-09-09 · 79 FR 45324
## Document
- **Document number:** 2014-17922
- **Category:** airworthiness
- **Manufacturer:** the Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 45324
- **Publication date:** 2014-08-05
- **Effective date:** 2014-09-09
- **FAA docket:** Docket No. FAA-2013-0790
## Abstract

We are superseding Airworthiness Directive (AD) 89-12-10, for certain The Boeing Company Model 747 airplanes. AD 89-12-10 required replacement of certain underwing fuel tank access doors with stronger, fire-resistant doors. This new AD requires inspecting certain fuel tank access doors for installation of impact-resistant doors, and stencils and index markers; corrective actions if necessary; revising the maintenance program to incorporate certain new airworthiness limitations; and adding airplanes to the applicability. This AD was prompted by a report of a standard access door installed instead of an impact-resistant access door and stencils missing from some impact- resistant access doors and adjacent wing skin. We are issuing this AD to prevent foreign object penetration of the fuel tank, which could cause a fuel leak near an ignition source (e.g., hot brakes or engine exhaust nozzle), consequently leading to a fuel-fed fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/08/05/2014-17922/airworthiness-directives-the-boeing-company-airplanes)
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