Spark Plugs

The following information is derived from the FAA's Service Difficulty Reports and Aviation Maintenance Alerts.

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Cessna 172N Skyhawk High Resistance The pilot observed a unusually high EGT reading. Examination revealed one of the engine’s eight REM38E spark plugs was not firing. Resistance check of all eight plugs revealed five exceeded the two kiloohm limit. An open current path in the failed spark plug was the probable reason for its failure. […]
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