Doc # 6.02.01 Page 1
Rev. 4 09 Jan 2003
51-CONTENTS
Structures
AMM
Section 51-20
Repair Processes
1.
General ..............................................1
2.
Center of Gravity Limits..................................1
3.
Control Surface Balancing ................................1
4.
Drain/Vent Holes .......................................1
5.
Holding the Component ..................................2
6.
Safety Precautions......................................2
7.
Workshop Conditions....................................3
Maintenance Practices
1.
General ............................................201
2.
Resin..............................................201
3.
Glass and Carbon Cloth................................201
4.
Core Material........................................202
5.
Laminating..........................................202
6.
Bonding Paste (Thickened Resin) ........................207
7.
Curing .............................................207
8.
Exterior Paint Finish...................................209
9.
Repairs ............................................213
Page 2 Doc # 6.02.01 09 Jan 2003 Rev. 4
51-CONTENTS
AMM
Structures
Section 51-30
Materials
1.
General ..............................................1
2.
Approved Materials .....................................1
Section 51-40
Fasteners
1.
General ..............................................1
2.
Description............................................1
Maintenance Practices
1.
General ............................................201
2.
Replace a Quick Release Fastener Stud ...................201
Section 51-60
Control Surface Balancing
1. General ..............................................1
Doc # 6.02.01 Page 3
Rev. 4 09 Jan 2003
51-CONTENTS
Structures
AMM
Section 51-80
Electrical Bonding
1.
General ..............................................1
2.
Description............................................1
Maintenance Practices
1.
General ............................................201
2.
Test the Electrical Bonding System .......................201
Page 4 Doc # 6.02.01 09 Jan 2003 Rev. 4
51-CONTENTS
AMM
Structures
CHAPTER 51
STANDARD PRACTICES AND STRUCTURE
1. General
The DA 40 is a single-engine, low-wing monoplane of composite construction. It has a ‘T’ tail and a fixed tricycle landing gear with a nose wheel that can caster.
The DA 40 fuselage has a semi-monocoque structure. Two glass fiber reinforced plastic (GFRP) half-shells make the fuselage skin. The fuselage shells have many layers of glass cloth. Rigid foam inserts give stiffness to the fuselage shells where necessary. All of the main structural components are GFRP rigid moldings. Many layers of glass cloth bond together to make each molding. Some components have layers of carbon fiber cloth to give more strength and stiffness.
The DA 40 has a cantilever wing. The wing has top and bottom shells. It has front and rear spars and a root rib made in three parts. Each shell has a carbon fiber reinforced plastic (CFRP) outer skin, a rigid foam core and a GFRP inner skin.
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.
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