Piper Cherokee Arrow II Pilots Operating Manual page 27

ARROW I1
FLIGHT CONTROLS
Dual flight controls are provided as standard equipment. A cable system provides actuation
of the control surfaces when the flight controls are moved in their respective directions.
The
horizontal surface
(stabilator) is of the flying tail design with a trim tablservo mounted
on the trailing edge. This tab serves the dual function of providing trim control and pitch
control forces. The trim function is controlled by a trim control wheel located on the control
console between the two front seats. Rotating the wheel forward gives nose down trim and
rotation aft gives nose up trim. The stabilator provides extra stability and controllability with
less area, drag and weight than conventional tail surfaces.
The rudder is conventional in design and incorporates a rudder trim. The trim mechanism
is a spring-loaded recentering device. The trim control is located on the right side of the pedestal
below the throttle quadrant. Turning the trim control clockwise gives nose right trim and
counterclockwise rotation gives nose left trim.
Ailerons are provided with differential deflection. This feature reduces adverse yaw in
turning maneuvers, and thus reducing the amount of coordination required.
Manually controlled flaps are provided. They are extended by a control cable and are
spring-loaded to the retracted (up) position. The control is located between the two front seats
on the control console. To extend the flaps pull the handle up to the desired flap setting of 10,
25 or 40 degrees. To retract, depress the button on the end of the handle and lower the control.
A balanced control system is used for light operating forces.
When extending or retracting flaps, there is a pitch change in the aircraft. This pitch change
can be corrected either by stabilator trim or increased control wheel force. When the flaps are in
the retracted position the right flap, provided with a over-center lock mechanism, acts as a step.
NOTE
The right flap will support a load only in the fully retracted (up)
position. When loading and unloading passengers make sure the
flaps are in the retracted (up) position.
AIRPLANE AND SYSTEMS
ISSUED: JULY 13,1973