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MAINTENANCE PRACTICES ................................................................................................... 201
1. General .................................................................................................................. 201
2. Remove/Install the Rudder.................................................................................... 201
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 0 55-00-00 Page 1
19 Dec 1997
CHAPTER 55-00
STABILIZERS
1. General
The DA20-C1 has the usual stabilizers. The vertical stabilizer is part of the fuselage. The aft part of
the left and right fuselage shells make the left and right shells of the vertical stabilizer. See Chapter
53-10 for data on the fuselage structure.
The horizontal stabilizer has top and bottom shells. Each shell has GFRP skins with a rigid foam
core. The horizontal stabilizer has a main spar. The main spar holds the attachment bracket.
Center ribs fore and aft give strength to the center area. A trailing edge web holds the hinges for
the elevator.
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 hinges attach to the bottom shell. A large horn
with the mass balance weight attaches to the bottom shell at the center.
The lower fin is a GFRP molding. Bolts attach the lower fin to the bottom of the fuselage.
The rudder has left and right shells. Each shell has GFRP skins with a rigid foam core. The shells
bond together at a flange. The hinges attach to the top face of the rudder and a flat face near the
bottom of the leading edge. The horn near the top makes the rudder mass balance.
Stabilizers
DA20-C1 AMM
Page 2
19 Dec 1997 55-00-00 Doc # DA201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 0 55-10-00 Page 1
19 Dec 1997
CHAPTER 55-10
HORIZONTAL STABILIZER
1. General
The DA20-C1 has the usual horizontal stabilizer. The horizontal stabilizer attaches to the top of the
vertical stabilizer. The elevator attaches to the trailing edge of the horizontal stabilizer. See
Chapter 55-20 for data about the elevator structure.
2. Description
The horizontal stabilizer has top and bottom shells. Each shell has GFRP skins with a rigid foam
core. The top shell has no cut-outs. The bottom shell has a large cut-out at the rear for the
elevator horn and mass balance. It also has two small triangular holes forward and aft of the front
rib.
The horizontal stabilizer has a main spar. The spar has GFRP skins with a rigid foam core. It also
has top and bottom flanges. The main spar bonds to the top and bottom shells with bonding paste.
The main spar has four holes for the mount plate. You can get access to the attachment bolts from
below. The mount plate goes down through the large cut-out in the bottom shell. Four more holes
in the bottom part of the mount plate attach to the vertical stabilizer top rib.
Fore and aft center ribs give strength to the center area. Both ribs are rigid GFRP moldings. They
bond to the other components with bonding paste. The front rib has a triangular shape.
The aft rib has sides with bends and a top face which joins the sides. It closes the sides of the
large cut-out in the bottom shell. The aft part has 3 holes on each side for the center hinge plates
for the elevator.
Left and right trailing edge webs close the trailing edges of the top and bottom shells. The webs
also hold the hinges for the elevator. Small holes in the bottom shell give access to the nuts which
attach the hinges. The webs bond to the top and bottom shells and the aft rib with bonding paste.
A small GFRP rib at each side closes the elevator cut-out. The rib bonds to the other components
with bonding paste.
A rigid GFRP fairing goes around the joint between the horizontal stabilizer and the vertical
stabilizer. Four screws attach the fairing to the vertical stabilizer.
Stabilizers
DA20-C1 AMM
Page 2
20 Mar 2001 55-10-00 Doc # DA201-C1
Rev. 5
Figure 1: Horizontal Stabilizer Structure
DA20-C1 AMM
Stabilizers
Doc # DA201-C1
Rev. 5 55-10-00 Page 201
20 Mar 2001
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove and install the horizontal stabilizer.
2. Remove/Install the Horizontal Stabilizer
A. Remove the Horizontal Stabilizer
Note: Use 2 persons to remove/install the horizontal stabilizer.
Detail Steps/Work Items Key Items
(1) Remove the horizontal stabilizer fairing.
− Remove 4 screws.
(2) Remove the bolt which connects the elevator
　
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