FLIGHT CONTROLS
The ailerons, devators, and ruidder of the Mark
211
operata
conventionally. Push-pull tubes with self-aligning rod end bear-
ings actuate these control surfaces. The ailerons have a differ-
ential linkage
(f.e., up travel
is
greater than down travel) to
minimize adverse yaw when they are deflected. Gap strips on
the hinge line minimize air
spillage from the high to the low
pressure side of the control surfaces. The ailerons have
kveled
trailing edges to lower pilot control force.
THE
AIIOBWEWOSITIVE CONTROL
SYSTEM
The Mooney Positive Control
(PC)
system provides a high de-
gree of roll stability by pneumatic inputs to the rudder ad ail-
eron systems. This system
is
operating whenever the engim
is
running. The engine vacuum pump provides the pneumatic
power required. The PC system cut-off valve located
in the
pilot's left-hand control wheel handle provides system cut-off
when
deprssed.
The
aircraft can be maneuver4 easily when
this valve is held down. When the vahe is relased, the airplane
will tend to raurn to straf@ and wings level flight from any
attitude. The
'%olE $rim9' knob provides an aileron trim func-
tion. Clockwise rotation allows trim to the right; coumerclsck-
wise rotation allows trim to the
left.
In the event of malfunction,
the pilot can easily override the system
at any time. Complete
disengagement may
be
accomplishd by depresing the cut-off
valve.
In
the event of complete loss of vacuum (idicatd by a
red light on the gyro horizon), the PC system will automatically
become inoperative. However, it should
be
noted that this system
will continue to operate even after a complete engine power loss
as long as the propeller is windmilling at approximately
11000
rpan
or above.
The PC system does not have any electronic requirements and,
therefore,
it
will operate completely independently of the elec-
trical system.
This aircraft is not approved for spins. In the event that the
pilot inadvertently approaches or enters a spin, the Positive
Control system can be overpowered from either the pilot's or
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