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Compass trouble
I took my Piper Warrior in for its annual and the mechanic
said that the compass card was missing and that he'd have to swing the plane to generate a new one. After swinging it, he claimed that he couldn't get the E-W deviation within the minimum. So he suggested we try "mu" shield (or something) to block the source of magnetism which he claims is coming from one of the instruments. (He says the compass works fine outside the plane.) Note: The instruments are all original, stock. Nothing has been changed (except a radio was added which he says is not the source.) The mu shield fails too. He says the next thing to try is to move the compass up to between the visors. He says he has spent 3 hours on this so far. I'm beginning to wonder, shouldn't a mechanic be able calibrate a compass in a stock Piper after 3 hours ? Is he incompetent ? Padding the bill ? Or does this really take this long ? He has inspected and fixed everything else. Do you think its reasonable at this time to ask him to sign off everything else, and take the plane somewhere else where, presumably, they know how to calibrate a compass ? |
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