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#1
May 8th 07, 12:01 PM
posted to rec.aviation.owning
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Altimeter accuracy
I read somewhere on the web that your A&P can adjust your altimeter by
removing a pin or a screw that allows the barometric pressure to be set independently from the altitude. Once it's set correctly, the pin or screw is replaced. Dave Jim Stewart wrote: How close should an altimeter be to field elevation when set to the pressure indicated by the field's AWOS? I'm seeing a 50' error. 
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#2
May 8th 07, 06:43 PM
posted to rec.aviation.owning
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Altimeter accuracy
dave wrote:
I read somewhere on the web that your A&P can adjust your altimeter by removing a pin or a screw that allows the barometric pressure to be set independently from the altitude. Once it's set correctly, the pin or It's under warranty and the dealer says his A&P can't break the seal. screw is replaced. Dave Jim Stewart wrote: How close should an altimeter be to field elevation when set to the pressure indicated by the field's AWOS? I'm seeing a 50' error.
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#3
May 15th 07, 02:35 AM
posted to rec.aviation.owning
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Altimeter accuracy
"dave" wrote in message
. .. I read somewhere on the web that your A&P can adjust your altimeter by removing a pin or a screw that allows the barometric pressure to be set independently from the altitude. Once it's set correctly, the pin or screw is replaced. Dave Not legally. Adjustment of an altimeter in this manner is considered a calibration. Calibration of instruments is considered a major repair and A&P mechanics are prohibited from performing repairs (minor or major) to instruments. In addition, the data correspondance between the altimeter and encoder (if equipped) would be nullified and require retesting by an appropriately-rated repair station. Mike
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