Wing Flaps; Flap Jackscrew Removal - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
C. Attach the lower, lateral fuselage push rod between the left fuselage idler bell
crank and the right fuselage bell crank, adjusting the length of the rod to fit those
items.
D. Install the upper, lateral fuselage push rod from right fuselage bell crank to control
stick torque-tube fitting. Adjust the length of this push rod to center the control
stick.
E. Clamp control stick in center position and free clamps on aileron. Set trailing
edges of ailerons 0.125-inch below trailing edge of flap trailing edge by lengthening
push rod from aileron to outboard wing bell crank.
F. Adjust and lock the aileron stops, accessible through the inspection holes forward
of the aileron, for the required travel. Aileron up travel should be 21 (±1) degrees
and down travel should be 17 (±1) degrees.
G. Go back through system and lock all check nuts.
H. To adjust the springs in the rudder-aileron interconnect system, clamp the rudder
and ailerons in the neutral position and adjust the turnbuckles until the springs are
the same length.
A variable position trim tab is attached to each aileron. A wing high attitude of either wing
may be corrected by adjusting the applicable trim tab down. Adjusting the tab up will
correct a low wing attitude. Begin with both tabs in neutral position (straight with trailing
edge of aileron).
A. Electric Aileron Trim Tabs. Thrush Aircraft Inc has made available an electric
aileron trim tab normally installed on left aileron. Initially, the tab is rigged the
same as servo-trim tabs, then the tab can be electrically adjusted to obtain level
flight. Compensating for the wind and in normal turns, the tab will act as a servo-
tab.
Wing flaps installed on the S2RHG-T65 are of an all-metal construction and hinged on
ball bearings. Each flap extends outboard from the fuselage to the aileron and is
attached to the aft wing spar by four (4) stainless steel hinges. A switch located on the aft
of the throttle quadrant electrically controls the flap operation. Movement of the flaps is
by a torque tube located below the cockpit floor and rotated by an electric motor-driven
jackscrew. Push rods attached to the arms of the torque tube moves the flaps to the
desired position. The flaps have been completely sealed against chemical spray.
A. Remove left side fuselage cowling under cockpit door and hopper.
B. Remove wing root fairings to gain access to the flap push road and jackscrew
attach bolts.
C. Disconnect each flap from the push rod and allow flap to swing and hang under
wing.
7-6
AIRCRAFT MAINTENANCE MANUAL
AILERON SERVO TRIM TABS

WING FLAPS

FLAP JACKSCREW REMOVAL

Effective: 05/05/04