111.11,
••••••
WING
OV
lIT
UGIIT
ILLUMINATED
mumination of
the
WING OV
HT
light indicates that
the
wing
structure
has
reached a temperature of
215°F
(102°C).
1.
WINGTEMP
Indicator - Check.
2.
If
WING
TEMP
indicator is approaching
or
in
the
yellow range, a
wing overheat condition
exists:
a.
Engine
RPM
- Reduce until WING
TEMP
indicator is back in
the
green range.
b.
If
overheat condition remains:
(1) STAB WING HEAT
Switch
- OFF.
(2)
fly
out of icing conditions.
Even
small accumulations of ice
on
the wing leading
edge
can cause aerodynamic stall prior
to
activation of
the stick shaker
and/or
pusher. These ice accumulations
can cause angle-of-attack indicator infonnation
to
be
unreliable.
If
approach
and
landing must be
made
with any ice (or suspected ice during
night operations)
on
the
wing leading edge, refer
to
lANDINGS, this
section.
WINDSHIElD
HEAT FAILURE
With
the
windshield heat system activated, a failure is indicated by the for-
mation of ice
on
the
heated portion
of
the windshield.
1. WSHLD HT Circuit Breaker (pilot's main bus) - Check and reset
if
necessary.
2.
e
Aircraft 35-067 thru 35-112 except 35-107 and 36-018 thru
36-031,
WSHLD HEAT AUTO-MAN Switch - AUTO.
e Aircraft 35-107, 35-113 & subsequent and 36-032 & subse-
quent, WSHLD
HT
Switch - ON.
3. Engine
RPM
-Increase
as
required
to
improve airflow.
4.
On
aircraft 35-067 thru 35-112 except 35-107 and 36-018 thru
36-031,
if
cabin altitude climbs
to
an
unacceptable level, CABIN
AIR
Switch -
MAX.
Descend
to
an
acceptable level.
FAA APPROVED 4-30-76
REISSUED
2-25-81.
CHANGE
10
4-7
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