wrote in message
...
On Fri, 14 Sep 2007 10:51:07 -0700, "Matt Barrow"
wrote:


Possibly, but it would depend on the wind SPEED.

I am not pre-judging the cause of the accident but there has been
mention of high temperature above the runway causing a higher density
altitued than perhaps calculated. Since I usaully fly in a low level
and colder climate (UK) where density altitude is mostly of little
importance I was interested in the effects. My only experience is from
a long runways in Palm Springs (100°F) and Minden (near Tahoe) with
runway around 5000ft and maybe 80°F.

From comments it would appear that at take-off density altitude may be
higher than expected but soon after take-off your density altitude
would reduce quite quickly.

Re. Ground Effect, I thought that was normally within about one
wingspan?

Thanks for the input.

Correct - one wingspan; my brain did a fart and I was thinking of the
thermals you can start picking up within a couple hundred feet when the sun
shines onto the ground at higher altitudes. It's not ground effect, and it
dissipates quickly at altitude.