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Maintenance and Inspection Procedures Manual
Type:
CT
Series:
CTLS
LSA
Page: 4-85
AF 04800001
Revision No. 3
Date: 14 Sep 2008
4.4 Structural Repair
4.4.1 Type of Maintenance
Heavy
4.4.2 Minimum Level of Certification
Repairman, Light Sport Aircraft-Maintenance (RLSA-M) or higher.
Flight Design structural repairs and composite training required.
Authorized Flight Design Service centers are equipped to perform structural repairs.
4.4.3 Repair Procedures
Structural repairs on composites can not be defined by standard procedures. Therefore, in any case, the
individual repair procedure has to be agreed with the airframe manufacturer upfront. Approval of the
manufacturer is also necessary top ensure compliance with applicable standards and regulations.
4.5 Painting and Coating
4.5.1 Tools needed to accomplish the task
Sandpaper 1200 mm;
Sandpaper 800 mm;
Sandpaper 400 mm;
Sandpaper 240 mm;
Sandpaper 120 mm;
Sandpaper 80 mm;
Sandpaper 50 mm;
Paint gun nuzzle 1.6 mm;
Polishing paste Poly Glanz;
Polishing Creme Glanz.
4.5.2 The parts needed to perform the task
None
4.5.3 Type of Maintenance
Heavy
4.5.4 Minimum Level of Certification
Repairman, Light Sport Aircraft-Maintenance (RLSA-M) or higher.
Flight Design task specific training required.
4.5.5 Puttying
Get ready the surface to repair (sand it with coarse grade sandpaper K 60 23x28 brown (Wuerth GmbH
&Co.), degrease with solvent, e.g. acetone).
Get ready the putty mixture VAKU-FZ from Wuerth GmbH &Co (mass proportion 50:1 putty to hardener).
Apply putty mixture onto the surface to repair so that it fills cavities and interstices between the fibers of
the fabric, smoothens the surface of the area being repaired and is of minimum thickness. Putty
consumption should not exceed 0.041PSF (200g/m
2
).
After 30 minutes apply putty for the second time onto the places with insufficient smoothness. Putty
consumption should not exceed 0.041PSF (200g/m
2
).