EDR wrote:
Hilton wrote:

John Clonts wrote:
I'm inbound on the final approach segment of the VOR-A approach at T82
(Fredericksburg Texas):


http://www.myairplane.com/databases/.../T82_vd_gA.pdf

At about 3 miles east of the airport I'm at the MDA of 2460 MSL ("766
AGL"),

This was (one of) your (almost) fatal mistake. At 2460' and 3 miles
out,
you probably were not at 766 AGL. The 766 you see is NOT AGL as you
would
first think. The 766' is the altitude above the airport elevation (for
a
circling approach). Note that 1694 + 766 = 2460.

It's probable that a lot of instrument pilots do not know this.

Let's pick nits...
Is it
Height Above Aerodrome?
or
Height Above Threshhold?

My point wasn't nitpicking. My point was that at 3 miles out there could be
a little hill that reduces the 766 to less. This becomes very significant
when there are hills on the approach and you think you're at 2000' AGL e.g.
4000 (2000) when actual AGL is significantly less. By saying "airport
elevation" I wasn't picking nits, just being correct since it was a circling
approach.

Hilton