THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
7-14
Effective: 01/01/08
Figure 7-8: Elevator Trim Control System
ELEVATOR TRIM TABS
Controllable trim tabs, located on the
inboard trailing edge of each elevator,
are operated by an elevator trim tab
control lever located on the left side of
the cockpit. The elevator trim tabs also
operate as anti-servo tabs, making
excessive pitch changes less likely.
Linkage between the elevator trim tab
control lever and the elevators consists
of push rods bell cranks and fairleads.
The push rod leading from the trim tab
control lever to the trim tab assembly
runs along the left side of the fuselage
and is guided at intervals by four
fairleads. The aft end of this push rod
attaches to a bell crank. This bell crank
has arms at each end permitting two
short push rods to be routed back to bell
cranks located on the inboard side of the
horizontal stabilizer. A short push rod
leads from these bell cranks to horns on
the trim tabs. (See Figure 7-8)
ELEVATOR TRIM TAB REMOVAL
A. Disconnect push rod from trim tab.
B. Remove rivets attaching trim tab
hinge to elevator and remove trim
tab.
