Message-ID: <000101bf5b7a$30e7d260$d9999cd1@lap>
Reply-To: "Douglas W. Johnson" <Lancair1@prodigy.net>
From: "Douglas W. Johnson" <Lancair1@prodigy.net>
To: "lancair list" <lancair.list@olsusa.com>
Subject: Theoretical Icing Flight
Date: Mon, 10 Jan 2000 09:37:51 -0500
Organization: Douglas W. Johnson
Mime-Version: 1.0

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John:  Being ultraconservative (wimp?), I would like to think that I would
just turn around and try again another day--I am one of those who have yet
to go above FL250, despite flying for just under 3 years (not many mountains
back here in the East).  FL290 would certainly be reasonable if your were
guaranteed the  reports were accurate, or that temps up there were low
enough to preclude icing.  I was "burned" by FSS once leaving OSH in
98--tops reported to be at FL180, but when I got up there was still in the
soup even up to FL210, when I developed intake icing which started to drop
my manifold pressure. The magnetic automatic bypass opened up as advertised,
but at the time wished I had installed a manual "pull"valve to make sure.  I
had a flight very similar to yours in 1998 when leaving San Francisco
enroute to Santa Fe--tops at FL240 all the way with deteriorating conditions
and icing near Santa Fe as I approached.  Cruising at FL250, I asked Center
for the nearest VFR conditions, powered back, and landed in Amarillo, TX.
Douglas W. Johnson, MD, FACR
Florida Radiation Oncology Group
(904) 202-7020 Voice
(904) 202-7029 Fax

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