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AIR5490A - Carbon Brake Contamination

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Document Number: AIR5490A
Project Initiation: 04-19-2011
Project Number: 11-02
Revision Number: A
Sponsor Name: Dan T. LaHue
Title
Carbon Brake Contamination
Scope
This document provides information on contamination and its effects on brakes having carbon-carbon composite friction materials (carbon). Carbon is hygroscopic and porous, and therefore readily absorbs liquids and contaminants. Some of the contaminants can impact intended performance of the brake. This document is intended to raise awareness of the effects of carbon brake contamination and provide recommendations for its prevention. Although not addressed in this report, contaminants can cause problems with other landing system components including tires.
Rationale
To capture latest inspection methods and industry containment actions for occurrences of catalytic carbon brake disk oxidation. Note: This revision will replace a previous panel's (A5A 08-04) efforts to create a separate document for this information.
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