It’s no secret that most instrument-rated pilots and those flying classic airplanes would love to rid their machines of the decades-old vacuum system that’s known to simply roll over and die with almost no notice. Of course, pressure from those classic vacuum systems are what keep many ancient attitude indicators operating. In the past five years, electronic alternatives to vacuum-operated attitude indicators have become more and more popular—except when it comes time to pay for them, a bill that includes installation. But electronic indicators aren’t nearly as prone to failure as the legacy systems. To some operators, however, even the new systems are pricier than they’d like.
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