BEECHCRAFT
Duchess
76
Section
VII
Systems
Description
circuit
breaker
switch on the pilot's subpanel placarded
CABIN
AIR
BLOWER. The blower is designed for ground
operation and climb-out and should
be
turned off dUring
cruise.
EXHAUST VENT
A fixed cabin exhaust vent is located on
the
left side of the aft
fuselage and provides for flow-through ventilation.
PITOT AND STATIC SYSTEMS
The pitot and static systems provide a source of impact and
static air for the operation of the flight instruments.
PITOT SYSTEM
A standard pitot tube for the pilot's
flight
instruments is
located
on
the outboard portion of the left wing leading
edge. The optional pitot tube (ME-44 and after) for the
copilot's flight instruments is located on
the
outboard portion
of the right wing leading edge.
PITOTHEAT
A heating element is installed in the pitot
mast
and is control-
led by the rocker-type switch located on
the
pilot's subpanel.
The switch is placarded PITOT HEAT - ON, and should
remain off during ground operations except for testing
or
for
short intervals of time to remove ice or
snow
from the mast.
One switch controls the heating elements
in
both pitot masts. I
April
1979
7-39
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