Electrothermal Heated Windshield Segment - Beechcraft Baron G58 Pilot Operating Handbook

Section 7
Systems Description
in the auto position, the deice boots inflate for a period of
approximately 12 seconds, then deflate automatically and
return to the vacuum hold-down position. The switch must be
tripped for each complete cycle. The MAN (manual) position
will inflate the boots only as long as the switch is manually
engaged. When the switch is released, the boots deflate.
Deice boots are intended to remove ice after it has accumu-
lated, rather than prevent its formation. If the rate of ice accu-
mulation is slow, best results are obtained by leaving the deice
system off until 1/2 to 1 inch of ice accumulates. Bridging can
occur if boots are actuated too early or too frequently.
Operation of the surface deice system in
ambient temperatures below -40°C can
cause permanent damage to the deice
boots.
The wing ice light, used to check for ice accumulation during
night operation, is located on the outboard side of the left
nacelle. The light switch is on the pilot's subpanel.
ELECTROTHERMAL HEATED WINDSHIELD
SEGMENT
The pilot's electrically heated windshield segment is controlled
by a switch located on the pilot's subpanel. Windshield heat is
designed for continuous in-flight use and should be applied
prior to encountering icing conditions. This system is also ben-
eficial as an aid in preventing frost and fogging due to rapid
descents from higher altitudes into warm, moist air.
Operation of the windshield heat will cause the standby com-
pass to become erratic; therefore, windshield heat should be
turned off for a period of 15 seconds to allow a stable reading
of the standby compass.
7-60
Model G58
May, 2015