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Old May 11th 08, 04:26 AM posted to rec.aviation.ifr
Andrew Sarangan
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Posts: 382
Default Tolerances - Published Minimum Altitudes

On May 9, 11:03 pm, John wrote:
If assigned IFR altitudes can be considered to have a tolerance of +/-
200 ft before you are "busted", what applies to published minimum
altitudes other than DH and MDA on approach plates? Most people will
say that you are not supposed to descend any amount below the DH/MDA
altitudes. Does this also apply to procedure turn altitudes,
transitions etc.? Is there a tolerance that is in effect +200 -0 that
applies?

In practical terms, whereas a decent of 100 ft below an assigned
altitude will cause no problems, is such a decent of 50-100' below a
published procedure turn altitude, transition altitude enough to get in
trouble?

John


Where is the +/-200ft tolerance specified except in the PTS? I've
heard many people refer to it, but could not find it in the FAR or AIM.