Cessna 210 pilot David Churchill wanted to do more with his regular instrument proficiency check than simply shoot approaches, so we came up with a plan that required him to use the portable GPS and handheld radio he carries as backups-but has never had to rely on it in a pinch. The scenario we came up with was centered on a simulated electrical fire that required turning off the electrical master switch in flight, and leaving it off. We'd plug in a hand-held radio for communication and use Churchill's portable Garmin 696 for GPS guidance.
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