I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 57
FOR SIMULATION USE ONLY – NOT A TRAINING AID
The three-axis trim positions are displayed on a triple-trim indicator installed on
the left console in each cockpit. The trim indicator provides a pictorial indication of
the aircraft trim condition.
Three green bands, one on each trim axis, provide the take-off trim setting range
for each trim axis. Power for the trim indicator is provided through a circuit
breaker, placarded TRIM IND, located on the generator bus circuit breaker panel in
the front and rear cockpits.
AILERONS
The aileron system includes the ailerons, control sticks, push-pull rods, and bell
cranks. The front and rear control sticks are interconnected by a interconnect tube.
The ailerons are deflected by lateral movement of either control stick.
Aileron travel is limited to 20° trailing edge up and 11° trailing edge down. The
ailerons are statically mass balanced with weights installed on the leading edges of
each aileron.
Aileron Trim
An electromechanical actuator, installed in the centre wing, is connected to a spring
box assembly and the centreline bell crank to provide aileron (roll) trim by actually
moving the ailerons.
The aileron trim actuator is controlled by a combined roll/pitch trim switch located
on the control stick grip in each cockpit. Aileron travel on the ground for roll trim is
approximately 6° trailing edge up for either aileron and 6° trailing edge down for the
opposite aileron.
Trim position is indicated on the triple-trim indicator on the trim control panel.
Power is provided through a circuit breaker, placarded AIL/EL TRIM, located on the
battery bus circuit breaker panel in the front cockpit.
Ground adjustable trim tabs are installed at the trailing edge of each aileron. The
tabs allow maintenance adjustment of the stick neutral trim input to the control
system by varying the aerodynamic forces acting on the ailerons. The ground
adjustable trim tabs are limited to 20° tab trailing edge up and 8° tab trailing edge
down.
ELEVATOR
The elevator system includes the elevator, control sticks, push-pull rods, down
springs, cables, bell cranks, and a bob weight.
The elevator is deflected by fore and aft movement of either control stick. The front
and rear control sticks are interconnected by an interconnect tube. Elevator travel
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