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ARP159A - Dielectric Testing of Spark Plugs

Document Number: ARP159A
Revision Number: A
Dielectric Testing of Spark Plugs
This report provides information on instrumentation and procedures for the dielectric testing of aircraft piston engine spark plugs to determine their functional condition. This report describes a method of determining the dielectric integrity of a spark plug by subjecting the insulation in the plug to voltage stress.
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