Who's flying out of the higest elev airport?

Hey, you mountain types out there :-) I'm doing some research on a safety
issue and need your help . I need a post from someone flying out of Colorado
somewhere, preferably Telluride or a field very close to Telluride. I need
as close to the highest elevation in the U.S. as I can get.
I'm not dealing with this issue in the context of right or wrong as it
pertains to mountain flying. I need to know if the Kollsman window in your
altimeters has a wide enough range to allow you, IF YOU DESIRED TO DO SO, to
set your altimeters to 0 elevation on a consistent basis before take off at
your field instead of a MSL setting. Again, I'm only interested in the
possibility, not the right and wrongs involved with doing this.
Thanks,
Dudley Henriques
International Fighter Pilots Fellowship
Commercial Pilot/ CFI Retired
For personal email, please replace
the z's with e's.
dhenriquesATzarthlinkDOTnzt

"Dudley Henriques" wrote in message nk.net...
Hey, you mountain types out there :-) I'm doing some research on a safety
issue and need your help . I need a post from someone flying out of Colorado
somewhere, preferably Telluride or a field very close to Telluride.

Leadville, CO is the highest elevation airport in the US (at least so says the sign
on the FBO building). Been there once.

I can't imagine using QFE in the mountains, not just because of the fact that the
instrument won't handle it. You don't have to go very far from a mountain
strip until you get into radically different terrain heights. Those altitudes are
published in MSL, the relationship to the airport field elevation isn't overly
interesting.

"Ron Natalie" wrote in message
. ..

"Dudley Henriques" wrote in message
nk.net...
Hey, you mountain types out there :-) I'm doing some research on a
safety
issue and need your help . I need a post from someone flying out of
Colorado
somewhere, preferably Telluride or a field very close to Telluride.

Leadville, CO is the highest elevation airport in the US (at least so says
the sign
on the FBO building). Been there once.

I can't imagine using QFE in the mountains, not just because of the fact
that the
instrument won't handle it. You don't have to go very far from a
mountain
strip until you get into radically different terrain heights. Those
altitudes are
published in MSL, the relationship to the airport field elevation isn't
overly
interesting.

I understand . That's why I specified the context as not being in the right
or wrong dept :-)..... (restricted to only the possibility factor). I just
can't remember the Kollsman low pressure side maximum for our GA altimeters
here in the U.S. I think it's 27.5 or 25.5 but I can't remember exactly
which; and I need to have this for a data point.
I'm attempting to come up with an average point above sea level based on a
standard atmosphere where 0 sets can't be made under normal conditions.
Should be easy, but I need that Kollsman range to do it.
Right now, with the information I have, I'm at around 2500 feet ASL for that
maximum, but not remembering that Kollsman window range, I want to be sure.
I just need some verifying data.
Thanks Ron,
Dudley

Dudley Henriques wrote:

I just
can't remember the Kollsman low pressure side maximum for our GA altimeters
here in the U.S. I think it's 27.5 or 25.5 but I can't remember exactly
which; and I need to have this for a data point.

Perhaps this will help.
http://www.ansys.com/industry/aerosp.../whittum1.html

George Patterson
Battle, n; A method of untying with the teeth a political knot that would
not yield to the tongue.

This is pretty much what I need George. Thanks much.
Dudley
"G.R. Patterson III" wrote in message
...


Dudley Henriques wrote:

I just
can't remember the Kollsman low pressure side maximum for our GA
altimeters
here in the U.S. I think it's 27.5 or 25.5 but I can't remember exactly
which; and I need to have this for a data point.

Perhaps this will help.
http://www.ansys.com/industry/aerosp.../whittum1.html

George Patterson
Battle, n; A method of untying with the teeth a political knot that
would
not yield to the tongue.

Dudley:

I fly out of FTG (5500 MSL) in Denver. Having not much else to do
this week, I'll fly down to COS (6200) and see what happens with
the Kollsman. Difficult to get to Leadville right now (altho
it's only about 100 m from COS due to the high winds. Over
the weekend the winds in the mountains were clocked at 125 mph
in some areas. No passes for me right now!

bc

"Blanche" wrote in message
...
Dudley:

I fly out of FTG (5500 MSL) in Denver. Having not much else to do
this week, I'll fly down to COS (6200) and see what happens with
the Kollsman. Difficult to get to Leadville right now (altho
it's only about 100 m from COS due to the high winds. Over
the weekend the winds in the mountains were clocked at 125 mph
in some areas. No passes for me right now!

bc
Hi Blanche;
Actually, if our data is correct as of this point, at 5500 feet you
shouldn't be able to zero the altimeter at FTG, without having to go all the
way up to COS in all that nasty wind :-)))

Next time you're out at FTG, try it for me will you? I don't think the
Kollsman will let you do it if the low range maximum is 27.5 where I think
it is!
Thanks much,
Dudley

Just checked -- Kollsman in my cherokee only goes to 28.1

You don't have to fly down there. Your altimeter goes down to 28.10.
You know the field elevation is 6200. Altimeter setting right now at
COS is 30.53. Therefore when set to 28.10 your altimeter will read
approx 3770.



Blanche wrote:

Dudley:

I fly out of FTG (5500 MSL) in Denver. Having not much else to do
this week, I'll fly down to COS (6200) and see what happens with
the Kollsman. Difficult to get to Leadville right now (altho
it's only about 100 m from COS due to the high winds. Over
the weekend the winds in the mountains were clocked at 125 mph
in some areas. No passes for me right now!

bc

Newps wrote:
You don't have to fly down there. Your altimeter goes down to 28.10.

but but but but....

Waste a perfectly gorgeous day to fly?