THRUSH AIRCRAFT, INC – MODEL S2R-G10
AIRCRAFT MAINTENANCE MANUAL
Table 7-1: CONTROL SYSTEM TROUBLESHOOTING CHART
AILERON SYSTEM
PROBLEM CAUSE REMEDY
Incorrect rigging of
push rods and tubes.
Rig in accordance with aileron
rigging procedures.
Correct aileron travel
cannot be obtained
by adjusting
belcrank stops.
Incorrect rigging of
belcranks.
Rig in accordance with aileron
rigging procedures.
Control stick bearings
dry or worn.
Check control stick bearings for
lubrication, excessive wear and
cleanliness.
Torque tube bearings
dry or worn.
Check bearing for lubrication,
excessive wear and cleanliness.
Resistance to control
stick movement.
Bent aileron. Repair or replace aileron.
Aileron push rods and
tubes out of rig.
Rig in accordance with aileron
rigging procedures.
Incorrect aileron
travel.
Aileron bell crank
stops incorrectly
Rig in accordance with aileron
rigging procedures.
FLAP SYSTEM
Circuit breaker out. Reset circuit breaker.
Defective flap switch. Replace flap switch.
Defective flap motor. Replace flap motor.
Defective electrical
circuit.
Replace defective wires.
Stripped or broken
jackscrew on flap
motor.
Replace jackscrew assembly.
Flaps do not extend
(down) or retract (up).
Defective micro-switch. Replace micro-switch.
Flaps fail to retract
(up) completely.
Incorrect rigging of push
rods.
Rig in accordance with rigging
procedures.
Incorrect adjustment of
push rods.
Adjust in accordance with rigging
procedures.
Bent push rods. Straighten or replace.
Flaps not
synchronized or fail to
fit evenly when
retracted (up).
Bent flap. Repair or replace flap.
Flaps on one side fail
to operate.
Broken arm on torque
tube or broken push
rod.
Replace broken parts.
Effective: 03/26/2010 Page 7-27
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