Trusting your instruments is a real good idea, until your attitude indicator screws up for no reason, and you are flying at 20K feet, at midnight, in the soup (clouds). Makes for some hairy flying now doesn't it? It came back on properly in this case, but was cocked ever so slightly to the left for the remainder of the trip which lasted about another hour through decent to touch down. I am not sure a problem was ever found. Probably vacuum or gyro or something.
Not fun.
-S
PS. Goerge (The nickname we gave the autopilot) seemed to always know which way was up, but I was the one in control when the problem happened.
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