Challenger Crashe at TEB

Gary Mishler wrote:

"Capt.Doug"
There was no visible moisture. The sky was crystal clear. The only wing
contamination possible would have been light frost on the bottom of the
wing
where the fuel had cold-soaked after landing- if the plane had made a
quick-turn. No other aircraft had requested de-icing. I doubt that the
cause
was wing ice.

Frost on top of the wings, and more importantly - on top of the T-tail is
highly likely. I have flown a T tail jet for 25 years and you can get frost
on top of the wings and tail very easily in the early morning with the right
conditions.

An AP article stated that the temperature at the time was 20 degrees. I think
that rules out frost, but I'm not sure. Another report today stated that there
was no indication that ice was a factor.

George Patterson
He who would distinguish what is true from what is false must have an
adequate understanding of truth and falsehood.

George Patterson wrote:

An AP article stated that the temperature at the time was 20 degrees.
I think that rules out frost, but I'm not sure.

George, as I posted earlier, I have personally experienced three different
aircraft frosting over within 10 minutes of landing when the outside air
temp was around 5-10 degrees F. Temperature alone does not rule out
frost.


--
Peter







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Peter R. wrote:
George Patterson wrote:


An AP article stated that the temperature at the time was 20 degrees.
I think that rules out frost, but I'm not sure.


George, as I posted earlier, I have personally experienced three different
aircraft frosting over within 10 minutes of landing when the outside air
temp was around 5-10 degrees F. Temperature alone does not rule out
frost.

Yes, I routinely have frost on my car windshields at all sorts of temps.
We had a cold snap a week ago where we got down to -15F a couple of
nights and I had a light layer of really hard to remove frost on my
vehicle that is parked outside. Unfortunately, polishing it smooth
doesn't help much for visibility through it!


Matt