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20 Sep 2007
Trouble-Shooting
1. General
The table below lists the defects you could have in the elevator control system. If you have the trouble
detailed in the Trouble column read across to the Possible Cause column. Then do the repair in the Repair
column.
Trouble Possible Cause Repair
Control vibration in the air. Too much backlash in the flight
controls.
Examine the system to isolate
the problem. Replace the
defective part.
Elevator controls stiff/catch. Bearings defective. Replace the defective eye-end.
Push-rod bent. Replace the push-rod.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 102
20 Sep 2007 27-30-00 Doc # 6.02.01
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AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-30-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to do test procedures on the elevator control system. And they
tell you how to adjust the elevator control system. Refer to Section 55-20 to remove/install the elevator.
WARNING: WHEN YOU DO WORK ON THE AIRPLANE CONTROLS, YOU MUST MAKE
SURE THE AREAS AROUND THE CONTROLS/CONTROL SURFACES ARE
CLEAR OF PERSONS/EQUIPMENT. IF YOU DO NOT DO THIS, INJURY TO
PERSONS AND DAMAGE TO CONTROL SURFACES CAN OCCUR.
WARNING: WHEN YOU COMPLETE WORK ON THE CONTROLS, MAKE SURE THAT
YOU REMOVE ALL LOOSE ITEMS/TOOLS FROM THAT AREA. LOOSE
ITEMS/TOOLS CAN PREVENT FULL MOVEMENT OF THE AIRPLANE
CONTROLS. THIS CAN CAUSE DEATH OR INJURY TO PERSONS.
2. Elevator Control System Test for correct range of Movement
A. Equipment
Item Quantity Part Number
Rigging pin. 1 -
Ruler or deflection gauge. 1 Commercial.
Fuselage trestle. 1 Commercial.
B. Elevator Control Test Procedure
Note: If you use a deflection gauge, make sure that the airplane does not move in pitch
during the procedure. It will cause errors in the test.
Detail Steps/Work Items Key Items/References
(1) Make a copy of the Control Surfaces Adjustment
Report.
Refer to Section 06-00.
Use it to record the measurements.
(2) If you will use a deflection gauge, put a trestle
under the rear fuselage.
To prevent movement in pitch.
(3) Remove the left pilot’s seat. Refer to Section 25-10.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 202
20 Sep 2007 27-30-00 Doc # 6.02.01
Rev. 5
Detail Steps/Work Items Key Items/References
(4) Install the rigging pin through the stick mounting
block and the torque tube.
Refer to Figure 1.
Note: Use a ruler or deflection gauge to make all measurements at the elevator
control surface. Make the measurement between the top surface of the trailing
edge of the horizontal stabilizer and the top surface of the elevator.
(5) Make sure that the elevator aligns with the
horizontal stabilizer.
At the stabilizer tips.
(6) Measure the distance between the top surface of
the trailing edge of the horizontal stabilizer and
the top surface of the elevator.
Record the distance.
(7) Remove the rigging pin from the stick mounting
block.
WARNING: WHEN YOU DO WORK ON THE AIRPLANE CONTROLS, YOU MUST
MAKE SURE THE AREAS AROUND THE CONTROLS/CONTROL
SURFACES ARE CLEAR OF PERSONS/EQUIPMENT. IF YOU DO
NOT DO THIS, INJURY TO PERSONNEL AND DAMAGE TO
CONTROL SURFACES CAN OCCUR.
(8) Move the control stick fully forward and hold it
against the stop.
(9) Measure the distance between the top surface of
the trailing edge of the horizontal stabilizer and
the top surface of the elevator.
Record the measurement.
The distance must be as shown in the
Control Surfaces Adjustment Report.
(10) Move the control stick fully aft and hold it against
the stop.
(11) Measure the distance between the top surface of
the trailing edge of the horizontal stabilizer and
the top surface of the elevator.
Record the measurement.
The distance must be as shown in the
Control Surfaces Adjustment Report.
(12) Install the left pilot’s seat. Refer to Section 25-10.
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