Flight Controls; Trim Systems - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

CESSNA SECTION 7
MODEL 208B 867 SHP AIRPLANE AND SYSTEMS DESCRIPTION
GARMIN G1000

FLIGHT CONTROLS

The airplane's flight control system, refer to Figure 7-1, consists of
conventional aileron, rudder, and elevator control surfaces and a pair of
spoilers mounted above the outboard ends of the flaps. The control
surfaces are manually operated through mechanical linkage using a
control wheel for the ailerons, spoilers and elevator and rudder/brake
pedals for the rudder. The wing spoilers improve lateral control of the
airplane at low speeds by disrupting lift over the appropriate flap. The
spoilers are interconnected with the aileron system through a push-rod
mounted to an arm on the aileron bell crank. Spoiler travel is
proportional to aileron travel for aileron deflections in excess of 5° up.
The spoilers are retracted throughout the remainder of aileron travel.
Aileron servo tabs provide reduced maneuvering control wheel forces.

TRIM SYSTEMS

Manually operated aileron, elevator, and rudder trim systems are
provided, refer to Figure 7-1.
The aileron is trimmed by a servo tab attached to the right aileron which
is mechanically controlled by the AILERON TRIM control knob located
on the control pedestal to the left of the FUEL/OIL SHUTOFF knob.
Rotating the AILERON TRIM control knob to the right (clockwise) will
trim the right wing down; conversely, rotating it to the left
(counterclockwise) will trim the left wing down.
The elevator is trimmed through two elevator trim tabs by utilizing the
vertically mounted ELEVATOR TRIM control wheel located on left side
of the control pedestal. Forward rotation of the ELEVATOR TRIM
control wheel will trim nose-down; conversely, aft rotation will trim nose-
up. The airplane is also equipped with an electric elevator trim system.
The rudder is trimmed through the nosewheel steering bungee
connected to the rudder control system and a RUD TRIM control wheel
mounted on the control pedestal. This is accomplished by rotating the
horizontally mounted RUD TRIM control wheel either left or right to the
desired trim position. Rotating the RUD TRIM wheel to the right will trim
nose-right; conversely; rotating it to the left will trim nose-left.
208BPHCUS-00 7-11
U.S.