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Corrosion in the towers of a magneto can cause high resistance, and the problem will be magnified as you go up in altitude.

This green corrosion could likely be cleaned up and it may improve some, but it may also indicate a good time to perform either a 500 hour inspection or an overhaul on the magneto.

Pressurized magnetos have an o-ring that seals the connection where the wiring harness attaches to the magneto. I found this one on a twin Cessna last week, while changing one of the magnetos.

Listen to today’s episode to hear about the details of this issue, and some things to think about for optimal magneto performance.

Thankfully, we got the twin Cessna running again, and the owner made 4 flights the very next day!

Have a great week friends!