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Section X
BEECHCRAFT
Safety Information
minimum
speed
for flight in icing conditions is
not
specified
in the
manual,
the following
indicated
airspeeds
must
be
maintained:
All
Baron and
Travel Air Models
-
130
KIAS
All other
Beechcraft
twin-engine
models
-
140
KIAS
The pilot must remain
aware
of the fact that
if
he
allows
his
airspeed
to deteriorate
below
this
minimum
speed,
he
will
increase the
angle
of
attack
of his
airplane
to the
point where
ice
may
build
up
on the
under
side
of the
wings
aft of
the
area
protected
by the boots.
The fact or
extent
of
ice
buihi-up in
unprotected
areas
will
not
be directly
observable
from the
cockpit.
Due to distortion
of the
wing
airfoil,
increased drag
and reduced
lift, stalling
speeds
will
increase
as ice accumulates
on the
airplane.
For
the
same reasons,
stall warning
devices
are not accurate
and
cannot be
relied upon in
icing conditions.
Even
though
the
pilot
maintains
the
prescribed
minimum
speed
for operating in icing
conditions,
ice
is
still
likely to build
up
on
other unprotected
areas
(the fuselage
and
the
unprotected
wing
leading
edge
inboard
of the
engine
nacelle).
Under
some
atmospheric
conditions,
it
may
even build
up aft
of
10-30
March, 1981
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