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to the control lock system: aileron/elevator
control lock and rudder lock.
Aileron/Elevator Control Lock
To lock the aileron and elevator control surfaces,
a removable flag-insert device fits through a
hole in both the control yoke bushing at the control
panel and the back of the pilot control yoke
(Figure 15-3). A special U-shaped lock pin
locks the yoke in a most-forward position, nose
down with the wheel at ailerons-neutral. The
U-shape of the pin ensures that no single pin
device can engage the lock. The device, installed
from the top, pins the control yoke to
the instrument panel. The flag on the pin covers
the pilot primary flight display (PFD) airspeed
tape and horizontal situational indicator
(HSI). The flag portion of the pin is keyed to
the instrument panel receptacle so the control
lock cannot be installed without obstructing
the view of the pilot.
The yoke position and the visual obstruction
from the flag provide unmistakable warning
of control lock engagement. To insert the lock:
• Rotate the yoke to the center position so
the receptacle in the bushing and the receptacle
on the control yoke are aligned.
• Move the yoke forward until both ends
of the pin can be inserted into their respective
receptacles.
• Insert the U-shaped pin of the flag device
into the receptacles.
• Check the control wheel is locked in
both pitch and roll.
When removing the lock:
• Grasp the U-shaped pin between the receptacles
(with the right hand) and remove,
raising it straight up until clear of
both receptacles.
• Stow the control lock.
• Check the control yoke is free and clear
for both roll and pitch.
Rudder Lock
The rudder control lock inserts a pin into the
aft rudder pulley, preventing movement of the
rudder. The rudder lock must be operated from
outside the aircraft (Figure 15-4).
To lock the rudder, the pilot rotates a handle
on an external lever on the left side of the tail
CITATION MUSTANG OPERATING MANUAL
Figure 15-4. Rudder Lock System (Left
Side of Tail Cone)
Figure 15-3. Aileron/Elevator Control
Lock
cone 60° counterclockwise (up), which inserts
a pin into the aft rudder pulley to lock the
rudder torque tube.
The lock disengages when the external lever is
rotated to point aft (streamlined). The lock can
also be disengaged from the cockpit by pulling
the control yoke aft from the neutral position.
NOTE
With the rudder lock engaged, the
nosewheel system allows up to 55°
of free castering when the pilot steers
with differential power and/or differential
braking. However, taxiing or
steering with rudder lock engaged
is not recommended. To release the
rudder lock from the cockpit, pull aft
on the control yoke.
Disengage the rudder lock before
towing. The rudder lock can be released
and re-engaged externally.
SECONDARY FLIGHT
CONTROLS
The secondary flight controls consist of the trim
systems for the primary flight controls, and the
lift and drag controls (flaps and speedbrakes).
TRIM SYSTEMS
Trim is provided by a tab on the inboard trailing
edge of most primary flight controls (both
elevators, the left aileron, and the rudder).
Trim systems are electrical on all three axes,
with additional mechanical trim also available
for pitch. Rudder and aileron trim are
electrically actuated by trim switches on the
lower pedestal. The elevator is operated by a
manual trim wheel on the left side of the
pedestal next to throttles. In addition, the electric
trim switches on either pilot control wheel
can control the elevator trim.
Aileron (Roll) Trim
The single aileron trim tab is on the trailing
edge of the left aileron only. The AILERON
TRIM control knob (Figure 15-5) controls the
CAUTION
15-6 510OM-00
CITATION MUSTANG OPERATING MANUAL
LEGEND
ELECTRICAL
CONTROL
AFT END OF
PEDESTAL VERTICAL
Figure 15-5. Aileron and Rudder Trim
510OM-00 15-7
CITATION MUSTANG OPERATING MANUAL
aileron trim tab through an electrical trim actuator
in the leading edge of the aileron. The
electric actuator uses two independent control
rods to move the aileron trim tab.
The aileron trim control knob is on the aft face
of the center pedestal. To operate the knob, depress
it before rotating it. Rotating the trim
knob left (counterclockwise) causes the aircraft
to roll left and trims the left wing down.
Near the bottom of the engine indication and
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