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Old May 10th 08, 03:48 PM posted to rec.aviation.ifr
Sam Spade
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Posts: 1,326
Default Tolerances - Published Minimum Altitudes

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


The practical test standards are simply wrong when it comes to MEAs or
any minimum altitude on an IAP.

The minimum is the minimum by law...period.

The only exception is not really an exception at all, DA. As a matter
of regulation DA does not have the word "minimum" associated with it.
Instead, at DA the decision must be made to continue descent with visual
reference or begin the missed approach.