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#3
May 4th 07, 03:39 AM
posted to rec.aviation.owning
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Altimeter accuracy
On Fri, 04 May 2007 01:42:07 GMT, Rip wrote:
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. +/- 75 feet for IFR Rip It depends on your field elevation. You should be able to check and see what the error was at the last altimeter certification for IFR. The tolerances, at the lower altitudes, a (Appendix E 14 CFR 43) 0 ±20' 500 ±20' 1000 ±20' 1500 ±25' 2000 ±30' 3000 ±30 4000 ±35 6000 ±40 8000 ±60 For a VFR only a/c, I do not believe there is any particular requirement. --ron 
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