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Flight Controls
DA20-C1 AMM
Page 204
19 Dec 1997 27-50-00 Doc # DA201-C1
Rev. 0
Detail Steps/Work Items Key Items
(13) Set the flap selector switch to LDG. The actuator must stop approximately
5mm (0.2 in) from the fully closed position.
(14) Do items 9 to 13 as necessary to get the
correct movement.
Approximately 5mm (0.2 in) of actuator
control rod movement from the fully closed
position.
(15) Set the BAT/GEN switch to OFF.
(16) Tighten the worm-drive clamps.
(17) Set the BAT/GEN switch to ON.
(18) Set the flap selector switch to CRUISE.
(19) If the flap circuit-breaker opens;
− Set the BAT/GEN switch to OFF.
− Increase the length of both short control
rods by 1 turn at the flaps.
− If necessary, Increase the length of the
emergency up-stop rod.
Make sure that the rod-ends are in safety.
Make sure that the rod-end is in safety.
(20) Close the FLAP circuit-breaker.
(21) Set the BAT/GEN switch to ON.
(22) Set the flap selector switch to T/O.
(23) Do items 18 to 22 again until the flaps stop
correctly.
(24) Test the flap pre-load:
− Make sure that both flaps contact the
bumpers together.
− Pull down on the flaps to just clear the
flap bumpers.
If necessary, adjust the length of the short
pushrod at the flap.
Use a spring scale. The force must be
3 to 5 kg (6.7 to 11.2 lb).
(25) If the flap pre-load is too low, decrease the
length of both short control rods by 1 turn at
the flaps.
Make sure that the rod-ends are in safety.
(26) Do items 24 and 25 again until the flaps stop
correctly.
(27) Put the angle level in position on the flap. Record the angle.
(28) Set the flap selector switch to LDG.
DA20-C1 AMM
Flight Controls
Doc # DA201-C1
Rev. 0 27-50-00 Page 205
19 Dec 1997
Detail Steps/Work Items Key Items
(29) When the flaps stop, measure the angle on
the angle level.
The angle must be 43° to 45°.
(30) If necessary, adjust the angle with micro
switch 4:
− Set the BAT/GEN switch to OFF.
− Loosen the 2 attaching screws.
− Move the switch a small distance.
− Tighten the 2 attaching screws.
See figure 3.
Move the switch forward to increase the
angle.
(31) Set the BAT/GEN switch to ON.
(32) Set the flap selector switch to T/O.
(33) Do items 28 to 32 again until the flaps stop
correctly at LDG.
(34) When the flaps stop, measure the angle on
the angle level.
The angle must be 14° to 16°.
(35) If necessary, adjust the angle with micro
switch 5:
− Set the BAT/GEN switch to OFF.
− Loosen the 2 attaching screws.
− Move the switch a small distance.
− Tighten the 2 attaching screws.
See figure 3.
Move the switch forward to increase the
angle.
(36) Set the BAT/GEN switch to ON.
(37) Set the flap selector switch to LDG.
(38) Do items 34 to 37 again until the flaps stop
correctly at T/O on the way up.
(39) Set the flap selector switch to CRUISE.
(40) When the flaps stop, measure the angle on
the angle level.
The angle must be +1° to -1°.
(41) If necessary, adjust the angle with micro
switch 1:
− Set the BAT/GEN switch to OFF.
− Loosen the 2 attaching screws.
− Move the switch a small distance.
− Tighten the 2 attaching screws.
See figure 3.
Move the switch forward to increase the
angle.
Flight Controls
DA20-C1 AMM
Page 206
19 Dec 1997 27-50-00 Doc # DA201-C1
Rev. 0
Detail Steps/Work Items Key Items
(42) Set the BAT/GEN switch to ON.
(43) Set the flap selector switch to T/O.
(44) Do items 39 to 43 again until the flaps stop
correctly at CRUISE.
(45) When the flaps stop, measure the angle on
the angle level.
The angle must be 14° to 16°.
(46) If necessary, adjust the angle with micro
switch 2:
− Set the BAT/GEN switch to OFF.
− Loosen the 2 attaching screws.
− Move the switch a small distance.
− Tighten the 2 attaching screws.
See figure 3.
Move the switch forward to increase the
angle.
(47) Set the BAT/GEN switch to ON.
(48) Set the flap selector switch to CRUISE.
(49) Set the flap selector switch to T/O.
(50) Do items 45 to 49 again until the flaps stop
correctly at T/O on the way down.
(51) Make sure that the T/O LED on the flap
position indicator is on.
(52) If necessary, adjust the position indication
with micro switch 3:
　
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