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#1
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Autopilot pitch problem
We've got an S-Tec 60-2 in our Aztec. After sitting out in a heavy pounding
rain last summer, we started experiencing run away pitch problems. I found an S-Tec news letter that says this can happen when water gets into the static system and the transducer can't read the proper static pressure. It says to remove the static line from the transducer, cap it, and fly the airplane with cabin static pressure going to the transducer to see if the problem goes away. No problems have been noted with any of the pitot/static instruments. Has anybody had this happen? Does anybody know what the transducer looks like? Obviously it's attached to a static line, and S-Tec says that it should be mounted in a warm dry place, but I'm wondering what I should look for. Thanks Jim |
#2
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We've got an S-Tec 60-2 in our Aztec. After sitting out in a heavy
pounding rain last summer, we started experiencing run away pitch problems. I found an S-Tec news letter that says this can happen when water gets into the static system and the transducer can't read the proper static pressure. It says to remove the static line from the transducer, cap it, and fly the airplane with cabin static pressure going to the transducer to see if the problem goes away. No problems have been noted with any of the pitot/static instruments. Has anybody had this happen? Does anybody know what the transducer looks like? Obviously it's attached to a static line, and S-Tec says that it should be mounted in a warm dry place, but I'm wondering what I should look for. Thanks Jim Look at http://www.s-tec.com/pdf/SYS60-2.pdf. It's the little blue round thingy. |
#3
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Thanks. Now I just need to find where it's mounted.
Jim |
#4
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"Jim Burns" writes:
Thanks. Now I just need to find where it's mounted. Find the static ports dedicated to the a/p pressure sensor, then follow the tubing. -jav |
#5
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That brings up a great question... Will there be a static port specifically
dedicated to the pressure transducer, or could the line going to the pressure transducer simply be T'd into the instrument static tubeing? I'm hopeing that it is a dedicated source/line, because it would simplify matters if we indeed find water in the line. Thanks Jim "Javier Henderson" wrote in message ... "Jim Burns" writes: Thanks. Now I just need to find where it's mounted. Find the static ports dedicated to the a/p pressure sensor, then follow the tubing. -jav |
#6
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"Jim Burns" writes:
That brings up a great question... Will there be a static port specifically dedicated to the pressure transducer, or could the line going to the pressure transducer simply be T'd into the instrument static tubeing? I'm hopeing that it is a dedicated source/line, because it would simplify matters if we indeed find water in the line. I have owned two airplanes with S-Tec autopilots, on both cases there were two static ports dedicated to the a/p. -jav |
#7
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Thanks. I'll check it out.
Jim "Javier Henderson" wrote in message ... "Jim Burns" writes: That brings up a great question... Will there be a static port specifically dedicated to the pressure transducer, or could the line going to the pressure transducer simply be T'd into the instrument static tubeing? I'm hopeing that it is a dedicated source/line, because it would simplify matters if we indeed find water in the line. I have owned two airplanes with S-Tec autopilots, on both cases there were two static ports dedicated to the a/p. -jav |
#8
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The answer to that question usually depends on whether the a/p was factory
equipment, or an add-on... "Jim Burns" wrote in message ... That brings up a great question... Will there be a static port specifically dedicated to the pressure transducer, or could the line going to the pressure transducer simply be T'd into the instrument static tubeing? I'm hopeing that it is a dedicated source/line, because it would simplify matters if we indeed find water in the line. Thanks Jim "Javier Henderson" wrote in message ... "Jim Burns" writes: Thanks. Now I just need to find where it's mounted. Find the static ports dedicated to the a/p pressure sensor, then follow the tubing. -jav |
#9
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My STec setup also has its own static port.
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#10
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Ours is too. Tested the transducer as prescribed by S-Tec, it was fine.
Found the trim servo mis-wired. Problem solved. Jim "cc" wrote in message news:0LELd.4006$0O4.1673@trnddc03... My STec setup also has its own static port. |
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