Section VII
Systems Description
WING
FLAPS
BEECHCRAFT
Duchess
76
The wing flaps are controlled
by
a three-position switch, UP,
OFF, and DOWN, located on the subpanel, to the right of the
control console. The switch must be pulled out
of
detent
before it can be repositioned.
A dial-type indicator, located
adjacent to the flap switch, has position markings for UP, 10°,
20°, and
ON.
Limit switches automatically interrupt power to
the
electric
motor when the flaps reach
the
extremes of travel. Inter-
mediate flap positions can be obtained
by
placing the three-
position switch in the OFF position during flap extension or
retraction.
Lowering the flaps in flight will produce the following effects:
Attitude - Nose Down
Airspeed - Reduced
Stall Speed - Lowered
When
the flaps are extended beyond approximately 16°, the
landing gear warning horn will sound (regardless
of
throttle
position) if the landing gear is
not
down and locked.
LANDING
GEAR
SYSTEIV!
The
retractable tricycle landing gea.r
is
fabricated from mag-
nesium castings and aluminum forgings. Retraction
and
ex-
tension of the
gear
is accomplished through the' use of
an
electrically driven nydraulic pump and hydraulic system ter-
minating in a hydraulic actuator assembly mounted in each
wheel well. The landing gear
may
be
hydraulically extended
or retracted, and may be lowered manually.
7-10
January
1978
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