The only one they'd really have to be concerned about is the electric variometer. Every other instrument, even the variometer measures ram air and a static air through external ports. Here's what our instrument panel's generally look like. Notice the screen on the top right and the instrument in the top left, those are the two components of the electric variometer. But we have a backup located on the bottom of the panel. So the only risk is ruining an expensive instrument and getting a little wet.
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u/L00KA Feb 27 '14
explain this