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S Remove the ball-valve from the end of the
hose.
(3) Remove the two screws and nuts that attach the
horn to the instrument panel.
(4) Remove the stall warning horn from the panel.
B. Install the Stall Warning Horn
Detail Steps/Work Items Key Items/References
% (1) Perform a Stall Warning Horn classification
% check.
Refer to Section 27-39.
(2) Make sure to install a Stall Warning Horn with the
% same classification.
%
(3) Put the stall warning horn in position in the
instrument panel.
(4) Install the two screws and nuts which attach the
horn to the panel.
(5) Make sure that the hose has the cotter pin
installed correctly.
Refer to Figure 1.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 202
20 Sep 2007 27-39-00 Doc # 6.02.01
Rev. 5
Detail Steps/Work Items Key Items/References
(6) Connect the flexible hose to the horn:
S Carefully push the ball-valve into the end of
the hose.
S Carefully push the hose onto the stall warning
horn.
S Make sure that there is a 20 mm (0.8 in.)
clearance between the end of the horn and
the cotter pin.
S Install the cable tie which connects the hose
to the stall warning horn.
(7) Install the instrument panel cover. Refer to Section 25-10
(8) Do a flight check of the stall warning system. Refer to the DA 40 Airplane Flight Manual.
3. Procedure to Remove Water from the Stall Warning System
Detail Steps/Work Items Key Items/References
(1) Remove the left hand pilot's seat. Refer to Section 25-10.
(2) Carefully pull the stall warning hose from the
wing root connector.
(3) Lower the end of the hose and drain the water
from the system.
(4) Reconnect then stall warning hose to the
connector in the wing root.
(5) Do a flight check of the stall warning system. Refer to the DA 40 Airplane Flight Manual.
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-39-00 Page 203
20 Sep 2007
% 4. Stall Warning Horn Classification Test
% The stall warning horn is attached to a suction pump via an adjustable valve. The pressure is measured
% with an altitude indicator, indicating feet. The test starts with the suction pump operating and the adjustable
% valve in the closed position. The adjustable valve is opened slowly and as soon as the stall warning horn
% starts whistling, the indication on the altitude indicator is read.
% The altitude indicator reading classifies the tested stall warning according to the table below:
%
Indicated height at the moment
when it begins whistling
% Classification
% 0 ft to 50 ft: reject
% 51 ft to 100 ft A
% 101 ft to 150 ft B
% 151 ft to 200 ft C
% 201 ft to 250 ft D
% über 251 ft reject
% Note: If the result of the classification test does not match the labeling on the stall warning
% horn, the stall warning horn must be replaced by a stall warning horn classified in the
% same class.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 204
20 Sep 2007 27-39-00 Doc # 6.02.01
Rev. 5
% Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-50-00 Page 1
20 Sep 2007
Section 27-50
Flight Controls - Flaps
1. General
The DA 40 has flaps for landing and take-off. An electric flap actuator moves the flaps. See Section 57-50
for data about the flap structure.
A three-position toggle switch controls the flaps. The switch is in the center section of the instrument panel.
The flap position indicator has marks for UP, T/O and LDG positions.
AIRCRAFT
Flight Controls DA 40 Series
AMM
Page 2
20 Sep 2007 27-50-00 Doc # 6.02.01
Rev. 5
Rear Main Bulkhead
Torsion Tube
Torsion Tube
Idler Lever
Flap Actuator
Rear Closing Rib
Rear Closing Rib
Flap
Push Rod
To Left Wing
Push Rod
to Left Wing
Push Rod
to Right Wing
Push Rod
to Right Wing
Rigging
Pin Hole
Spacer
Flap Actuator
Flap
Transfer Lever
Transfer Pins
Bushes
Guide
Insert
Figure 1: Flap Control System in the Fuselage
AIRCRAFT
DA 40 Series
AMM
Flight Controls
Doc # 6.02.01
Rev. 5 27-50-00 Page 3
20 Sep 2007
2. Description
Figure 1 shows the flap control system in the fuselage. Figure 2 shows the flap push-rods and bellcranks
in the wing. Figure 3 shows the flap actuator installation.
A. Flap Actuator
An electric actuator operates the flaps. The electric actuator is under the left passenger seat. A
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