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Each stop consists of a GFRP block with rubber coating, bonded to the inside of the upper wing skin.
When the aileron is deflected fully downward, the aileron paddle is deflected fully upward and contacts
the stop.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 4
20 Sep 2007 27-10-00 Doc # 6.02.01
Rev. 5
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Figure 2: Aileron Controls in the Wings
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-10-00 Page 5
20 Sep 2007
3. Operation
If you move the control sticks to the left:
) The push-rods connected to the stick move to the right.
) The front bellcrank moves the push-rod below the center console to the rear.
) The push-rod below the center console moves the idler lever and second short push-rod to the
rear.
) The second short push-rod moves the rear bellcrank so that the long push-rods in the wing move
to the left.
) The left aileron bellcrank in the left wing moves the short push-rod attached to the left aileron horn
to the rear.
) The left aileron moves up.
) The push-rod in the right wing also moves to the left. It pulls the aileron bellcrank in the wing which
moves the push-rod attached to the right aileron horn forward.
) The right aileron moves down.
If you move the control sticks to the right:
) The left aileron moves down.
) The right aileron moves up.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 6
20 Sep 2007 27-10-00 Doc # 6.02.01
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AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-10-00 Page 101
20 Sep 2007
Trouble-Shooting
1. General
The table below lists the defects you could have in the aileron 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
Airplane moves about its
longitudinal axis in flight.
Aileron push-rods need
adjusting.
Adjust the aileron push-rods.
Aileron controls stiff/catch. Bearings defective. Replace the defective eye-end.
Control rod guides defective. Replace the guides.
Push-rod bent. Replace the push-rod.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 102
20 Sep 2007 27-10-00 Doc # 6.02.01
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AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-10-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to do tests on the aileron control system. They also tell you
how to adjust the aileron control system. Refer to paragraphs 4 and 5 for removal, installation and
access data on the push-rods and bellcranks. Refer to Section 57-60 to remove/install the ailerons.
WARNING: WHEN YOU DO WORK ON THE AIRPLANE CONTROLS, YOU MUST
MAKE SURE THE AREA AROUND THE CONTROLS/CONTROL
SURFACES ARE CLEAR OF PERSONNEL AND EQUIPMENT. IF YOU
DO NOT DO THIS, INJURY TO PERSONNEL AND DAMAGE TO
CONTROL SURFACES CAN OCCUR.
WARNING: WHEN YOU COMPLETE WORK ON THE CONTROLS, MAKE SURE
THAT YOU REMOVE ALL LOOSE ITEMS OR TOOLS FROM THAT
AREA. LOOSE ITEMS OR TOOLS CAN PREVENT FULL MOVEMENT OF
THE AIRPLANE CONTROLS. THIS CAN CAUSE DEATH OR INJURY TO
PERSONS.
2. Aileron Control System Test for Correct Range of Movement
A. Equipment
Item Quantity Part Number
Control stick rigging pins. 2 -
Ruler. 1 Commercial.
B. Aileron Control Test Procedure
Note: Use a ruler to make all measurements at the aileron control surfaces. Make the
measurement between the top surface of the aileron, and the top surface of the
wing tip.
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) Remove the left pilot’s seat. Refer to Section 25-10.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 202
20 Sep 2007 27-10-00 Doc # 6.02.01
Rev. 5
Detail Steps/Work Items Key Items/References
(3) Install the control stick rigging pins:
S At the bottom of the left stick.
S Through the left mounting bracket into the
torque tube.
Refer to Figure 1.
To lock aileron movement.
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