# Airworthiness Directives; Boeing Model 757-200, -200PF, and -300 Series Airplanes, Powered by Pratt & Whitney PW2000 Series Engines
> **Rule** · Final rule. · Published 2005-10-13 · Effective 2005-11-17 · 70 FR 59644
## Document
- **Document number:** 05-20264
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 59644
- **Publication date:** 2005-10-13
- **Effective date:** 2005-11-17
- **FAA docket:** Docket No. FAA-2005-20137
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 757-200, -200PF, and -300 series airplanes, powered by Pratt & Whitney PW2000 series engines. This AD requires repetitive inspections for loose or damaged components of the support brackets and associated fasteners for the hydraulic lines located in the nacelle struts, and any related investigative and corrective actions. This AD results from reports of damage and subsequent failure of the support brackets and associated fasteners for the hydraulic lines located internal to the upper fairing cavity of the nacelle struts. We are issuing this AD to prevent such failure, which, in conjunction with sparking of electrical wires, failure of seals that would allow flammable fluids to migrate to compartments with ignition sources, or overheating of the pneumatic ducts beyond auto-ignition temperatures, could result in an uncontained fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/10/13/05-20264/airworthiness-directives-boeing-model-757-200--200pf-and--300-series-airplanes-powered-by-pratt-and)
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