VOR Approach - Can you alter it?
Roy Smith wrote:
This is often the case with terminal VOR approaches. The VOR is off to the
side of the runway, and the final approach course is set up so you
intercept the extended runway centerline far enough out that you can safely
maneuver to line up with the runway. Notice the visibility minimum of 1
mile; I'll bet if you draw out where the FAC intersects the centerline,
it'll be less than a mile from the threshold.
The point at which the radial crosses the runway centerline has nothing
to do with establishing visibility minimums. Visibility minimums are
predicated on whether the MAP is prior to the runway and the height of
the MDA above TDZ elevation.
This is one of the big advantages of GPS; it lets you
create straight-in segments to any runway end, without having to worry
about navaid placement.
Usually, but not always. If there are no precision minimums the RNAV
final can be off by as much as 15 degrees if required by terrain further
out.
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