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On May 19, 7:08*am, Mxsmanic wrote:
A Lieberman writes: Yep, go ahead, try leveling off with an AI ERRONEOUSLY showing a 20 pitch up. *Go ahead and trust that instrument. The AI is the most reliable instrument on most aircraft, after the magnetic compass. *And of course you'll want two, just in case one fails, for IFR.. Would love to know what your sources are on that information MX. in all the aircraft I have flown both the AI and DI were powered from the same vacuum pump and the pump is the most common cause of failure of gyroscopic instruments. How do I know that? not from any books I have read, and I have many on aviation, but from first hand advice from several flying instructors, and actually had a vacuum pump failure in a Warrior on one of my PPL flight tests ( and you are not allowed to ask why I had more than one test :) ) Terry PPL Downunder |
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