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vertical control rod to the elevator horn.
(3) Remove the 2 bolts which connect the lower
mounting bracket to the upper mounting
bracket.
(4) Remove 4 bolts which attach the horizontal
stabilizer mount plate to the vertical
stabilizer.
Hold the horizontal stabilizer.
(5) Lift the horizontal stabilizer clear of the
airplane.
Use 2 persons.
B. Install the Horizontal Stabilizer
Detail Steps/Work Items Key Items
(1) Put the horizontal stabilizer in position on the
vertical stabilizer.
Use 2 persons.
(2) Install the 4 mounting plate attaching bolts. Torque to 20.5 Nm (15.3 ft.lbs).
(3) Install the 2 bolts which connect the lower
mounting bracket to the upper mounting
bracket.
Torque to 6.5 Nm (4.6 ft.lbs).
Stabilizers
DA20-C1 AMM
Page 202
20 Mar 2001 55-10-00 Doc # DA201-C1
Rev. 5
Detail Steps/Work Items Key Items
(4) Install the bolt which connects the elevator
vertical control rod to the elevator horn.
Torque to 1.7 Nm (1.2 ft.lbs). Make sure
that the fork of the elevator trim actuator
engages the spring mount on the control
rod.
(5) Do a test for correct, full and free movement
of the elevator control. If necessary, adjust
the elevator control.
Refer to Chapter 27-30
(6) Install the horizontal stabilizer fairing.
− Install 4 screws.
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 0 55-20-00 Page 1
19 Dec 1997
CHAPTER 55-20
ELEVATOR
1. General
The DA20-C1 has the usual elevator. The elevator attaches to the rear web of the horizontal
stabilizer. See Chapter 27-30 for data about the elevator controls.
2. Description
Figure 1 shows the elevator structure.
The elevator has top and bottom shells. Each shell has GFRP skins with a rigid foam core. The
bottom shell also makes the leading edge spar. The top edge of the leading edge spar has a flange
which goes forward. The shells bond together at this flange and at the trailing edge.
The hinges attach to the bottom shell. Each hinge is a small metal block with a bush. A bolt holds
the block to the leading edge spar. A small hole in the bottom shell near each hinge gives access
to the attachment.
A large horn attaches to the bottom shell at the center. The attaching bolts for the horn go into the
elevator shells at the leading and trailing edges. The top shell has an access hole for the front bolt.
The horn has a hole with a bush for the elevator control rod. The front of the horn has the elevator
mass balance weight.
Stabilizers
DA20-C1 AMM
Page 2
19 Dec 1997 55-20-00 Doc # DA201-C1
Rev. 0
Figure 1: Elevator Structure
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 0 55-20-00 Page 201
19 Dec 1997
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove and install the Elevator. See Chapter 27-30
for adjustment data for the elevator control system.
2. Remove/Install the Elevator
A. Remove the Elevator
Note: Use two persons to remove the elevator. Or use control clamps to hold the
elevator in position while you remove/install the attaching bolts.
Detail Steps/Work Items Key Items
(1) Remove the horizontal stabilizer fairing.
− Remove 4 screws.
(2) Remove the bolt which connects the elevator
vertical control rod to the elevator horn.
(3) Remove the 5 elevator hinge bolts. Hold the elevator.
There are 2 bolts outboard at each side
and 1 center bolt through the control horn.
(4) Lift the elevator clear of the airplane.
B. Install the Elevator
Detail Steps/Work Items Key Items
(1) Put the elevator in position on the horizontal
stabilizer.
(2) Install the 5 hinge bolts. There are 2 bolts outboard at each side
and 1 center bolt through the control horn.
Refer to Chapter 20 for standard torque
values.
Stabilizers
DA20-C1 AMM
Page 202
19 Dec 1997 55-20-00 Doc # DA201-C1
Rev. 0
Detail Steps/Work Items Key Items
(3) Install the bolt which connects the elevator
vertical control rod to the elevator horn.
Make sure that the fork of the elevator trim
actuator engages the spring mount on the
control rod.
(4) Do a test for correct, full and free movement
of the elevator control. If necessary, adjust
the elevator control.
Refer to Chapter 27-30
(5) Install the horizontal stabilizer fairing.
− Install 4 screws.
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 9 55-30-00 Page 1
29 Apr 2004
CHAPTER 55-30
LOWER FIN
1. General
The lower fin has three functions. It helps give directional stability. It makes a tail-bumper. It also
　
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