3. Elevator Control System Adjustments
If you cannot get the correct range of movement of the elevator control system, use this procedure to
adjust the system. Gust travel refers to the amount of travel remaining at the control surface with the
control stick held against the cockpit stop.
WARNING: IF YOU DO AN ADJUSTMENT OF A PUSH-ROD, YOU MUST MAKE SURE
THAT THE PUSH-ROD IS STILL IN SAFETY. IF YOU DO NOT DO THIS, THE
PUSH-ROD CAN DISCONNECT. THIS CAN CAUSE DEATH OR INJURY TO
A. Equipment PERSONNEL.
Item Quantity Part Number
Ruler or deflection gauge. 1 Commercial.
Rigging pins. 3 -
B. Elevator Control Adjustment Procedure
Refer to Figure 1.
Detail Steps/Work Items Key Items/References
(1) Remove these items for access:
S The pilots' seats.
S The rudder.
Refer to Sections:
25-10.
55-40.
(2) Install rigging pins in the following:
S Through the stick mounting block and the
torque tube.
S The idler lever.
S The rear bellcrank.
On the control bulkhead.
On the front main bulkhead.
On the vertical stabilizer rear web.
(3) If you cannot put a rigging pin into a lever or
bellcrank, adjust the push-rods as necessary.
Refer to Section 27-00 for the push-rod
adjustment procedure.
(4) Make sure that the elevator aligns with the
horizontal stabilizer.
At the stabilizer tips.
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Flight Controls DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
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(5) If the elevator does not align with the horizontal
stabilizer, adjust the vertical push-rod at the rear
bellcrank.
Refer to Section 27-00 for the push-rod
adjustment procedure.
(6) Remove rigging pins from the following:
S The stick mounting block.
S The idler lever.
S The rear bellcrank.
On the control bulkhead.
On the front main bulkhead.
On the vertical stabilizer rear web.
(7) Do a test for the correct range of elevator
movement.
Refer to Paragraph 2.
(8) Do an inspection of all the controls that you have
adjusted.
S If necessary for your airworthiness authority,
do a second inspection of the controls.
(9) Install these items:
S The pilots' seats.
S The rudder.
Refer to Sections:
25-10.
55-40.
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AMM
Flight Controls
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4. Elevator Push-Rod Access
Elevator Push-Rod Remove/Install Access References
Between the control torque tube and
the idler lever at the front main
bulkhead.
Pilots’ seats. Refer to Section 25-10.
Between the idler lever at the front
main bulkhead and the bellcrank at
the vertical stabilizer rear web.
Pilots’ seats.
Rudder.
Refer to Section 25-10.
Refer to Section 55-40.
Between the bellcrank at the vertical
stabilizer rear web and the elevator.
Rudder. Refer to Section 55-40.
5. Elevator Bellcrank and Lever Access
Elevator Bellcrank/Lever Remove/Install Access References
Idler lever at the front main bulkhead. Pilots’ seats. Refer to Section 25-10.
Bellcrank at the vertical stabilizer rear
web.
Rudder. Refer to Section 27-20.
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AMM
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DA 40 Series
AMM
Flight Controls
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Section 27-38
Flight Controls - Elevator Trim
1. General
The DA 40 has an elevator with a trim tab. The trim tab is mechanically operated. This lets you trim the
airplane for different speeds and center-of-gravity positions.
A handwheel on the center console controls the elevator trim. An indicator tells the pilot the trim setting.
A flexible cable moves the trim tab.
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Flight Controls DA 40 Series
AMM
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Figure 1: Elevator Trim Mechanism in the Cockpit
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DA 40 Series
AMM
Flight Controls
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2. Description
The trim installation has 3 main parts:
) A handwheel assembly with a trim indicator.
) A flexible cable which connects the handwheel to the trim tab.
) The trim tab actuator assembly.
Figure 1 shows the elevator trim mechanism in the cockpit. Figure 2 shows the trim tab actuator assembly.
A. Trim Handwheel Assembly
A handwheel assembly on the center console controls the elevator trim system. The assembly has a
　
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