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Detail Steps/Work Items  Key Items/References 
(1)  Maintain the temperature of the repair at 20 to 25 °C (68 to 77 °F) for at least 24 hours to pre-cure the repair.  If you do not have an oven or a warming room you can make a temporary enclosure around the repair to trap the heat from a flame proof air heater. 
CAUTION: DO NOT ALLOW A TOO HIGH TEMPERATURE DURING THE CURE. A TOO HIGH TEMPERATURE CAN DAMAGE THE COMPOSITE STRUCTURE. 
(2)  After 24 hours raise the temperature of the repair to at least 65 °C (149 °F) for a minimum of 6 hours to complete the first stage of the post-cure.  Monitor the temperature every 15 minutes for the first hour and then hourly. 
(3)  After a minimum of 6 hours raise the temperature of the repair to at least 80 °C (176 °F). Maintain this temperature for a minimum of 14 hours to complete the final post-cure.  The final stage post-cure time can be divided into sections but you must make sure that the repair has a minimum total of 14 hours at post-cure temperature. 

Doc # 6.02.01 Page 207
Rev. 4 09 Jan 2003

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Figure 1: Paint Color Scheme
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8. Exterior Paint Finish
A. Paint Color Scheme
CAUTION:  YOU MUST PAINT THE AIRPLANE TO THE PAINT COLOR SCHEME. IF YOU DO NOT PAINT THE AIRPLANE TO THE PAINT COLOR SCHEME, YOU MAY CAUSE DAMAGE TO THE AIRPLANE STRUCTURE.
Since full strength of the fiber composite structure has only been shown up to a temperature of 54 EC (129 EF), the outer surface of the airplane must be painted white.
Exceptions are registration markings and warning marks, which are subject to the following restrictions (refer to Figure 1):
Zone 1  No registration markings or warning marks may be applied here.
Zone 2  Registration markings and warning marks may be applied here. They may have
(a)
any shape, provided that colors with a solar absorptivity not exceeding 0.5 (e.g. light yellow or light green) are used

or

(b)
any color, provided that no area measuring 200 mm by 200 mm (8 in. by 8 in.) is covered by more than 50 %. One consequence is that the width of decoration stripes must not exceed 100 mm (4 in.).

Zone 3  Registration markings and warning marks of any shape and color may be applied here without restrictions.
Doc # 6.02.01 Page 209
Rev. 4 09 Jan 2003

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Figure 2: Scarfing the Paint Coat
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B. Painting a Large Repair Area
Refer to Figure 2. This procedure must be followed when the diameter of the area which must be painted is larger than 200 mm (8 inches).
DA 40 Series

Detail Steps/Work Items  Key Items/References 
(1)  Carefully scarf the edges of the existing paint finish.  Do not sand through the existing anti-static filler. Minimum scarf length: 25 mm (1 inch). To ensure that the anti-static filler of the existing paint is electrically connected to the anti-static filler of the new paint. 
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. 
(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. 
　
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