Can a plane be too old for clag? Can retrofit glass bring new life or is the risk too high?
A reader recently questioned the wisdom of flying IFR in "old" aircraft with traditional flight displays that lack modern accouterments — GPS in particular. It's a fair question and one that deserves some thought. I have to admit that growing up in an earlier age, and having flown IFR for almost a decade before I had the luxury of even a DME, and three decades before I experienced glass, I don't feel deprived if I have to keep an E6B and a plotter handy to periodically check ground speed and ETAs. But there is more to it than this.
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