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BRACELETS ETC) WHEN YOU ADJUST THE COMPENSATING
MAGNETS OR OPERATE THE LAND COMPASS. METALIC MATERIAL
CAN CAUSE ERRORS.
Note: If possible, use a compass swing area that has been tested for magnetic
interference. In any case, use a level area which is away from steel structure,
underground pipes, cable, reinforced concrete, other airplanes and ground
equipment.
A. Equipment
Item Quantity Reference
Calibrated land compass 1 Commercial
DA20-C1 AMM
Navigation
Doc # DA 201-C1
Rev. 9 34-20-00 Page 203
29 Apr 2004
B. Compass Swing
Detail Steps/Work Items Key Items
(1) Adjust the compensating magnets in the
compass to a neutral position.
(2) Start the engine. Set all electrical loads to
ON.
Refer to the DA20-C1 Flight Manual.
(3) Use a calibrated and reliable land compass
to confirm the airplane heading.
(4) Align the airplane to magnetic north. Adjust the N-S compensator so that the
compass indicates a heading of 0°.
(5) Align the airplane to magnetic east. Adjust the E-W compensator so that the
compass indicates a heading of 90°.
(6) Align the airplane to magnetic south. Adjust the N-S compensator to remove half
the error between what is indicated and
180°
(7) Align the airplane to magnetic west. Adjust the E-W compensator to remove
half the error between what is indicated
and 270°
(8) Turn the airplane through 360°. Record the
deviation at each 30°. Prepare a deviation
table that shows the corrections that must be
applied to each heading
If large deviations occur when you operate
electrical equipment/systems, the deviation
table must also show the corrections to
apply at each 30° heading when the
system is operated.
(9) Install the deviation table in the compass
card holder below the compass.
Navigation
DA20-C1 AMM
Page 204
29 Apr 2004 34-20-00 Doc # DA 201-C1
Rev. 9
4. Remove/Install The Stall Warning Horn
A. Remove The Stall Warning Horn
Detail Steps/Work Items Key Items
(1) Remove the instrument panel cover. Refer to Chapter 25-10
(2) Cut the Ty-wrap that connects the hose to
the stall warning horn. Carefully pull the
hose from the stall warning horn.
− Make sure you remove the ball valve
from the end of the hose.
(3) Remove the two mounting screws and nuts.
(4) Remove the stall warning horn from the
panel.
− Remove the protective cloth from the
panel.
B. Install The Stall Warning Horn
Detail Steps/Work Items Key Items
(1) Put the protective cloth in position in the
instrument panel. Then put the stall warning
horn in position in the instrument panel.
(2) Install the two mounting screws and nuts.
(3) Make sure the hose has the cotter pin
installed correctly.
Refer to Figure 3
(4) Install the ball valve in the end of the pipe.
Carefully push the pipe on the stall warning
horn.
− Make sure that there is 20 mm clearance
between the end of the horn and the
cotter pin.
− Install the Ty-wrap on the hose that
connects to the stall warning horn.
Refer to Figure 3
(5) Install the instrument panel cover. Refer to Chapter 25-10
(6) Do a flight check of the stall warning system. Refer to the DA20-C1 Flight Manual.
DA20-C1 AMM
Navigation
Doc # DA 201-C1
Rev. 9 34-20-00 Page 205
29 Apr 2004
5. Procedure To Remove Water From The Stall Warning System
Detail Steps/Work Items Key Items
(1) Remove the left hand pilots seat. Refer to Chapter 25-10.
(2) Carefully pull the stall warning pipe from the
wing root connector.
(3) Lower the end of the pipe and drain the
water from the system.
(4) Connect the stall warning pipe to the wing
root connector.
(5) Do a flight check of the stall warning system. Refer to the DA20-C1 Flight Manual.
Navigation
DA20-C1 AMM
Page 206
19 Dec 1997 34-20-00 Doc # DA 201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Navigation
Doc # DA 201-C1
Rev. 0 34-30-00 Page 1
19 Dec 1997
CHAPTER 34-30
LANDING AND TAXIING AIDS
1. General
Some airplanes with dual VHF COMM equipment have a Bendix\King KMA 24 Audio\Marker
receiver. See Chapter 23-50 for data about the audio integration functions of the KMA 24.
The DA20-C1 can have other marker, localizer and glideslope receivers as customer options.
Refer to the manufacturers manuals for data about the equipment installed as a customer option.
2. Description and Operation
The KMA 24 is an audio selector panel. It also has a marker beacon receiver and a headphone
　
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