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correctly.
Micro-switch 3 defective.
Open circuit in the micro-switch
3 wiring.
Replace the micro-switch.
Do a continuity test of the
wiring. Repair or replace the
defective wire.
Flap circuit-breaker opens at
the end of down movement.
Micro-switch 4 defective. Replace the micro-switch.
Flap circuit-breaker opens at
the end of up movement.
Micro-switch 1 defective. Replace the micro-switch.
LDG LED stays on when the
flaps are not in the LDG
position. The other indications
operate correctly.
Micro-switch 5 defective. Replace the micro-switch.
CRUISE LED stays on when
the flaps are not in the CRUISE
position. The other indications
operate correctly.
Micro-switch 2 defective. Replace the micro-switch.
T/O LED stays on when the
flaps are not in the T/O position.
The other indications operate
correctly.
Micro-switch 3 defective. Replace the micro-switch.
Flaps move to LDG when T/O
set from CRUISE.
Micro-switch 2 defective. Replace the micro-switch.
Flaps move to CRUISE when
T/O set from LDG.
Micro-switch 5 defective. Replace the micro-switch.
Flight Controls
DA20-C1 AMM
Page 104
19 Dec 1997 27-50-00 Doc # DA201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Flight Controls
Doc # DA201-C1
Rev. 15 27-50-00 Page 201
30 Apr 2009
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove and install the components of the flap system.
They also tell you how to test and adjust the system. See Chapter 57-50 for data about removing
and installing the flaps.
2. Remove/Install the Flap Actuator
See Figure 1.
A. Remove the Flap Actuator
Detail Steps/Work Items Key Items
(1) If possible, set the flaps to the LDG position.
(2) Disconnect the battery. Chapter 24-31
(3) Remove the left pilot’s seat. Chapter 25-10
(4) Disconnect the supply wires to the flap
motor.
(5) Disconnect the control harness plug from the
switch-board.
(6) Remove the access panels below the aft
control bulkhead.
(7) Remove the bolt which attaches the actuator
control rod to the bellcrank .
At the aft control bulkhead.
Hold the flaps.
(8) Lower the flaps by hand until the stop.
(9) Remove the bolt which attaches the actuator
body to the forward mounting bracket.
(10) Remove the actuator from the airplane.
Flight Controls
DA20-C1 AMM
Page 202
19 Dec 1997 27-50-00 Doc # DA201-C1
Rev. 0
B. Install the Flap Actuator
Detail Steps/Work Items Key Items
(1) Put the flap actuator in position in the
fuselage.
Make sure that the actuator is in the fully
retracted position.
(2) Install the bolt which attaches the actuator to
the forward mounting.
(3) Install the bolt which attaches the actuator
control rod to the bellcrank.
At the aft control bulkhead.
Hold the flaps.
(4) Connect the control harness plug for the
switch-board.
(5) Connect the supply wires to the flap motor.
(6) Connect the battery. Chapter 24-31
(7) Do the adjustment test procedure. See below.
(8) Install the left pilot’ seat. Chapter 25-10
(9) Install the access panels below the aft
control bulkhead.
DA20-C1 AMM
Flight Controls
Doc # DA201-C1
Rev. 1 27-50-00 Page 203
24 Mar 1999
3. Adjust/Test the Flap System
A. Equipment
Items Quantity Part Number
Spring scale 1 Commercial
Angle level 1 Commercial
B. Procedure
Note: This procedure assumes that the flap controls are fully connected.
Note: Use the micro-switches to adjust the range of movement of both flaps. Use the
short rods at the flap horns to adjust the angle of one flap against the other.
Detail Steps/Work Items Key Items
(1) Open the FLAP circuit-breaker. On the right side of the instrument panel.
(2) Remove the left pilot’ seat. Chapter 25-10
(3) Remove the access panels below the aft
control bulkhead.
(4) Remove the cover from the flap actuator
switch board.
(5) Loosen the 2 worm-drive clamps which hold
the switch board to the actuator body.
(6) Set the BAT/GEN switch to ON.
(7) Set the flap selector switch to LDG.
(8) Close the FLAP circuit-breaker.
(9) Set the flap selector switch to T/O. Let the flap actuator extend about 12mm
(1/2 in).
(10) Set the BAT/GEN switch to OFF.
(11) Move the switch board to give approximately
5mm (0.2 in) of actuator control rod
movement from the fully closed position.
(12) Set the BAT/GEN switch to ON.
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钻石20系列AMM 1(109)
