by Paul Bertorelli
Had it up to here with all the glossy color ads extolling the virtues of cutting-edge EFIS installed in airplanes you cant re motely afford? We know the feeling and we know plenty of owners who share it and who pine for the wonders of bleeding-edge glass-panel flying. Why, for example, cant you just retrofit one of the blasted things into, say, a nice 20-year-old Saratoga?
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