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7. Approved Materials, Suppliers. ..................................................................................8
CHAPTER 51-60 CONTROL SURFACE BALANCING ............................................................................1
1. General.......................................................................................................................1
2. Control Surface Balance. ...........................................................................................1
Standard Practices
And Structures
DA20-C1 AMM
Page 2
19 Dec 1997 51-CONTENTS Doc # DA201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Standard Practices
And Structures
Doc # DA201-C1
Rev. 9 51-00-00 Page 1
29 Apr 2004
CHAPTER 51-00
STANDARD PRACTICES AND STRUCTURES
1. General
This Chapter gives you only the basic data about the structure.
The DA20-C1 is a single-engine, low-wing monoplane of composite construction. It has a ‘T’ tail. It
also has a fixed tricycle landing gear with a nose wheel that can caster.
The fuselage has a glass fiber skin of semi-monocoque construction with bulkheads and stiffeners.
The tapered cantilever wing has an I-spar. The spar caps are carbon fiber rovings. The wing skin
is a sandwich of GFRP with a rigid foam core. Each wing attaches to the fuselage at three places.
The vertical stabilizer is part of the fuselage structure. It has a spar near the rudder hinge line and
a full laminate skin. The horizontal stabilizer, elevator and rudder have GFRP skins with rigid foam
cores. The ailerons and flaps have GFRP/CFRP skins with rigid foam cores.
The acrylic canopy has a frame made from carbon fiber laminate.
An epoxy filler with a polyurethane paint protects the airplane against moisture and ultraviolet rays.
2. Structural Classification
When you do a repair, you must identify the area of the structure (Refer to Figures 1, 2, and 3). If
the damage is larger than the permitted repair, you must ask the manufacturer for advice.
A. Limited Area 1
In this area repairs are permitted on external skin damage up to 250 mm (10 in) in diameter.
B. Limited Area 2
In this area repairs are permitted on external skin damage up to 50 mm (2 in) in diameter.
C. Prohibited Repair Area
Only the manufacturer (or an approved repair facility) can do repairs in this area.
Standard Practices
And Structures
DA20-C1 AMM
Page 2
29 Apr 2004 51-00-00 Doc # DA201-C1
Rev. 9
A
A
B
B
Section A-A
Prohibited
Limited 2
400
200
150
100
300
350
300
500
300
150
150
80
400
LIMITED AREA 1
Repairs allowed on external
skin damage up to 250mm
(10 in) diameter
LIMITED AREA 2
Repairs allowed on external
skin damage up to 50mm
(2 in) diameter
PROHIBITED REPAIR AREA
Repairs to be carried out only by
the manufacturer or an approved
repair facility
NOTE: All dimensions are mm
Section B-B
Figure 1: Fuselage Restricted Area Diagram
DA20-C1 AMM
Standard Practices
And Structures
Doc # DA201-C1
Rev. 0 51-00-00 Page 3
19 Dec 1997
3. Design Dimensions, Clearances And Wear Limits
A. Design Dimensions
The detail drawing for the part shows the design dimensions. Use the design dimensions when
manufacturing new parts or for a reconditioning scheme.
B. Clearances And Wear Limits
Where a chapter gives wear limits, the following data is listed:
− The maximum and minimum design dimensions for each part.
− The acceptable worn dimensions.
− The design assembly and acceptable worn clearances.
− The description and location of parts to be examined or inspected.
− A remarks column containing recommendations and, where necessary, repair details.
4. The Description And Location Of Parts
The Maintenance Manual gives the description and location of parts. Where a special repair
needs more data, it is shown on the repair drawing.
Standard Practices
And Structures
DA20-C1 AMM
Page 4
30 Oct 2008 51-00-00 Doc # DA201-C1
Rev. 14
LIMITED AREA 1
Repairs allowed on external
skin damage up to 250mm
(10 in) diameter
LIMITED AREA 2
Repairs allowed on external
skin damage up to 50mm
(2 in) diameter
PROHIBITED REPAIR AREA
Repairs to be carried out only by
the manufacturer or an approved
repair facility
NOTE: All dimensions are mm
245
285
100
150
300 300
100
70
150
150
150
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