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Rudder Cable/Yoke Remove/Install Access References
Cockpit cables between the firewall
and the yoke.
Pilots’ seats. Refer to Section 25-10.
Rear fuselage cables between the
yoke and the rudder.
Pilots’ seats.
Passenger seat.
Rudder.
Refer to Section 25-10.
Refer to Section 55-40.
Yoke. Pilots’ seats. Refer to Section 25-10.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 212
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AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-30-00 Page 1
20 Sep 2007
Section 27-30
Flight Controls - Elevator
1. General
The DA 40 has the usual elevator control system. An elevator attached to the horizontal stabilizer gives
longitudinal control. The two control sticks operate the elevator.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 2
20 Sep 2007 27-30-00 Doc # 6.02.01
Rev. 5
Control Stick Mounting Block
Torque Tube Assy
Left Stick
Push Rod to
Idler Lever
Idler Lever
Rigging
Pin Hole
Rigging
Pin Hole
Elevator Lever
Front Main Bulkhead
Figure 1: Elevator Control Installation in the Cockpit
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-30-00 Page 3
20 Sep 2007
2. Description
Figure 1 shows the elevator controls in the cockpit. Figure 2 shows the elevator controls in the rear
fuselage.
Each pilot has a control stick that attaches to a torque tube assembly. The torque tube assembly has a
lever which attaches to a short push-rod. The short push-rod connects to an idler lever on the front main
bulkhead. The idler lever connects to a long push-rod.
The long push-rod has 3 guide bearings. The baggage frame, ring frame 1 and ring frame 2 have push-rod
guides. Each guide has three rollers.
The long push-rod attaches to a bellcrank at the bottom of the vertical stabilizer. The bellcrank attaches
to a vertical push-rod in the vertical stabilizer. The vertical push-rod connects to the elevator horn.
The elevator stop for the downward movement consists of a GFRP block which is bonded to the inside of
the upper skin of the horizontal stabilizer. When the elevator is deflected fully downward, the forward
extension of the elevator horn is deflected fully upward and contacts the stop.
The elevator stop for the upward movement consists of a bolt/bush assembly which is installed in the trim
actuator mounting bracket in transverse direction (see Section 27-38, Figure 2). When the elevator is
deflected fully upward, the forward extension of the elevator horn is deflected fully downward and contacts
the stop.
You cannot adjust the elevator stops.
3. Operation
If you move the control stick forward:
) The torque tube assembly turns.
) The lever below the torque tube assembly pushes the short push-rod aft.
) The short push-rod pushes the long push-rod aft.
) The long push-rod pushes the bellcrank rearward.
) The bellcrank pushes the vertical push-rod up.
) The vertical push-rod moves the elevator horn.
) The elevator moves down.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 4
20 Sep 2007 27-30-00 Doc # 6.02.01
Rev. 5
If you move the control stick aft:
) The torque tube assembly turns.
) The short and long push-rods move forward.
) The bellcrank pulls the vertical push-rod down
) The elevator moves up.
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-30-00 Page 5
20 Sep 2007
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Figure 2: Elevator Controls Installation in the Rear Fuselage
Rigging
Pin Hole
Elevator Actuating Lever
Collar Bush
Distance Bush
Large Washer
Elevator Push Rod
Elevator Bellcrank
Baggage Frame
Ring Frame 1
Ring Frame 2
Elevator Push Rod
Idler Lever To Bellcrank Idler Lever
Rigging
Pin Hole
Balance Weight
Elevator Lever Rib
Earthing Strip
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 6
20 Sep 2007 27-30-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-30-00 Page 101
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钻石40系列AMM 1(162)
