AD Proposed for Challenger Air-driven Generator

AINmxReports » October 5, 2011

by  David A. Lombardo

October 5, 2011, 3:42 PM

The FAA is proposing an airworthiness directive for the Bombardier CL-600-2B19 (CRJ) air-driven generator (ADG). The document cites three occasions when the ADG failed to provide power during scheduled checks. In all three cases an investigation revealed the silver-plated copper wires within the ADG power feeder cables were damaged due to galvanic corrosion. The FAA determined the silver-plating is inadequate for the application. Damaged power feeder wires may cause the ADG to be unable to provide emergency electrical power. The FAA is taking comments through November 7.

Tags: ChemistryCorrosionCoatingsPlatingThin film depositionEngineeringGalvanic corrosionElectrical wiringElectromagnetismTechnology

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Maintenance and Modifications
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