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GREASE AND DUST PREVENT A GOOD BOND.
(2) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone and re-sand
the area.
(3) Apply HS filler to the repair area. Obey the filler manufacturer's
instructions.
(4) Allow the HS filler to cure. 2 hours at 45 °C (113 °F).
(5) Lightly sand the HS filler with 320 grit sanding
paper.
(6) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone and re-sand
the area.
(7) Apply two layers of anti-static spray filler to the
repair area.
Obey the filler manufacturer's
instructions.
(8) Allow the anti-static filler to dry. At 20 to 25 °C (68 to 77 °F), 60 to 75 %
relative humidity.
(9) Carefully sand the anti-static filler with 320 grit
sanding paper.
Remove as little anti-static filler as
possible. Do not sand through the
edges.
AIRCRAFT
Standard Practices and
Structures
DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 212
20 Sep 2007 51-20-00 Doc # 6.02.01
Rev. 5
(10) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone and re-sand
the area.
(11) Apply the coating paint. Obey the paint manufacturer's
instructions.
(12) Allow the coating paint to dry. 90 minutes at 45 °C (113 °F), then 2
days at 20 °C (68 °F).
C. Painting a Small Repair Area
This procedure must be followed when the diameter of the area which must be painted is 200 mm
(8 inches) or less.
Detail Steps/Work Items Key Items/References
WARNING: DO NOT GET ACETONE, FILLER, OR PAINT ON YOUR SKIN.
ACETONE, FILLER, AND PAINT CAN CAUSE SKIN DISEASE.
WARNING: DO NOT BREATHE ACETONE, FILLER, OR PAINT FUMES.
ACETONE, FILLER, AND PAINT FUMES CAN CAUSE DISEASE.
CAUTION: THERE MUST BE NO GREASE OR DUST ON THE REPAIR AREA.
GREASE AND DUST PREVENT A GOOD BOND.
(1) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone and re-sand
the area.
(2) Apply 2 layers of HS filler to the repair area. Obey the filler manufacturer's
instructions.
(3) Allow the HS filler to cure. 2 hours at 45 °C (113 °F).
(4) Lightly sand the HS filler with 320 grit sanding
paper.
(5) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone and re-sand
the area.
(6) Apply the coating paint. Obey the paint manufacturer's
instructions.
(7) Allow the coating paint to dry. 90 minutes at 45 °C (113 °F), then 2
days at 20 °C (68 °F).
AIRCRAFT
DA 40 Series
AMM
Standard Practices and
Structures
Doc # 6.02.01
Rev. 5 51-20-00 Page 213
20 Sep 2007
9. Repairs
A. Class 4 Repairs
The repair of minor scratches, abrasions or similar damage which is not a crack or a puncture in
the skin.
Detail Steps/Work Items Key Items/References
WARNING: DO NOT GET ACETONE ON YOUR SKIN. ACETONE CAN CAUSE
SKIN DISEASE.
WARNING: DO NOT BREATHE ACETONE FUMES. ACETONE FUMES CAN
CAUSE DISEASE.
(1) Sand the repair area with 150 grit sanding paper.
(2) Make sure that the area to be repaired is clean
and free from any contaminants.
If necessary, use acetone.
(3) Apply putty to the repair area to fill any damage. Obey the putty manufacturer's
instructions.
Fill to the original contour of the
structure.
(4) Allow the putty to cure. 5 to 20 minutes.
(5) Lightly sand the putty with 150 grit sanding paper.
(6) Apply filler(s) and paint coat. Refer to Paragraph 8 in this Section.
AIRCRAFT
Standard Practices and
Structures
DA 40 Series
AMM
Page 214
20 Sep 2007 51-20-00 Doc # 6.02.01
Rev. 5
Table 2 - Material Specifications
WLB No.
(German
Aviation
Standard)
Manufacturer
and Type
Material Weave Weight
per unit
area
[g/m2]
Thickness
[mm]
Scarf
[mm]
8.4548.60 Interglas 92110 glass 2/2 twill 163 0.17 7
8.4551.60 Interglas 92125 glass 2/2 twill 280 0.30 12
8.4554.60 Interglas 92140 glass 2/2 twill 390 0.43 18
8.4520.6 Interglas 92145 glass uni-directional 220 0.23 10
8.4525.60 Interglas 92146 glass uni-directional 425 0.43 18
8.3520.80
Interglas 98141,
Cramer
CCC 452
carbon 2/2 twill 200 0.30 18
Cramer
CCC 459 Al
carbon with
aluminum
2/2 twill 220 0.32 20
SGL Sigratex
　
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