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(1) Put the trim tab in position on the elevator. Refer to Figure 3.
(2) Align the hinges.
(3) Install the hinge rods in each side.
CAUTION: DO NOT USE FORCE TO INSTALL THE LOCK WIRE IN THE TRIM
TAB HINGE. YOU CAN DAMAGE THE GFRP HINGE.
(4) Lock the hinge rods in position with wire. Use new lock wire.
(5) Align the cranked actuating levers with the trim
tab.
(6) Install the bolt which attaches the cranked
actuating levers to the trim tab.
(7) Do a test for correct range of movement of the
elevator trim control.
Refer to Section 27-31.
AIRCRAFT
DA 40 Series
AMM
Stabilizers
Doc # 6.02.01
Rev. 5 55-20-00 Page 205
20 Sep 2007
Center
Line
5
2
6
3
4
2
3
4
5
6 7
8
Item No. Layers Reference No. Type Remarks
2 2 8.4548.60 Glass twill 2/2 ±45º
3 2 8.4548.60 Glass twill 2/2 ±45º
4 2 8.4548.60 Glass twill 2/2 ±45º, 125 mm x 135 mm
% 5 3 8.4554.60 Glass twill 2/2 ±45º, 90 mm x 220 mm
6 1 H 60 3 mm Rigid foam
8 1 8.4548.60 Glass twill 2/2 ±45º
Figure 4: Layers of Cloth in the Top and Bottom Elevator Shells
AIRCRAFT
Stabilizers
DA 40 Series
AMM
Page 206
20 Sep 2007 55-20-00 Doc # 6.02.01
Rev. 5
4. Repair Data for the Elevator Shells
Figure 4 shows the layers of glass fiber cloth in the elevator shells. Use this data when you need to
repair the elevator.
The Figures show the main layers of cloth. The cross-hatching on the Figure shows the orientation of
the fibers. The orientation is also given in the related table. When you repair the elevator, you must
use the same type of cloth with the same fiber orientation.
The numbers in circles beside each drawing give the order in which the layers are applied (‘Stages’).
The first stage is a layer of filler and is not shown. Stage 1 is the outer face of the shell.
Always do a burn test on a piece of composite from the damaged area before you do a repair. Refer
to Section 51-20 for the burn test.
AIRCRAFT
DA 40 Series
AMM
Stabilizers
Doc # 6.02.01
Rev. 5 55-30-00 Page 1
20 Sep 2007
Section 55-30
Lower Fin
1. General
The DA 40 has a removable lower fin. The lower fin is a GFRP molding. Screws attach the lower fin
to the bottom of the rear fuselage.
2. Description
The lower fin is a GFRP molding. It has a left shell and a right shell. The shells bond together with
resin.
The lower fin has a hole at the rear for a tie down rope. It also has a flat area at the bottom for a tail
skid.
AIRCRAFT
Stabilizers
DA 40 Series
AMM
Page 2
20 Sep 2007 55-30-00 Doc # 6.02.01
Rev. 5
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% Figure 1: Lower Fin
AIRCRAFT
DA 40 Series
AMM
Stabilizers
Doc # 6.02.01
Rev. 5 55-30-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to remove and install the lower fin.
2. Remove/Install the Lower Fin
A. Remove the Lower Fin
Detail Steps/Work Items Key Items
(1) Remove the sealing tape from the joint between
the lower fin and the fuselage.
(2) Remove 5 screws which attach the lower fin to
% the rear fuselage and cut sealant.
Refer to Figure 1.
Hold the fin.
(3) Remove the lower fin from the airplane.
B. Install the Lower Fin
Detail Steps/Work Items Key Items
(1) Clean the area of the fuselage where the lower
fin attaches.
(2) Put the lower fin in position below the fuselage. Hold the lower fin.
(3) Install the 5 screws with washers which attach
% the lower fin. Seal with PU-based sealant.
(4) Apply sealing tape to the joint between the lower
fin and the fuselage.
AIRCRAFT
Stabilizers
DA 40 Series
AMM
Page 202
20 Sep 2007 55-30-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Stabilizers
Doc # 6.02.01
Rev. 5 55-40-00 Page 1
20 Sep 2007
Section 55-40
Rudder
1. General
The DA 40 has the usual rudder. The rudder attaches to the rear web of the vertical stabilizer. See
Section 27-20 for data about the rudder controls.
AIRCRAFT
Stabilizers
DA 40 Series
AMM
　
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