2.
Replace a Window....................................201

3.
Window Repairs......................................203

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CHAPTER 56
WINDOWS

1. General
The DA 40 has 3 windows. All of the windows are molded acrylic glass (plexiglass). The one-piece canopy window covers the pilots’ cockpit. It is also the windscreen. The passenger door has a window. The right side of the fuselage has a window for the passenger compartment.
A high-performance elastic adhesive bonds each window to the structure.
Section 56-10 gives the data for all of the windows. Refer to Section 52-10 for data about the canopy and door structure.
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Section 56-10
Flight Compartment Windows

1. General
This Section tells you about the windows in the canopy, passenger door and fuselage. Refer to Section 52-10 for data about the canopy and door structure.
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Figure 1: Windows
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2. Description and Operation
Figure 1 shows the windows.
% A. General
The DA 40 has 3 windows. Each window is polycast molded acrylic glass (plexiglass). This material gives good optical characteristics. It is also strong. It can be accurately formed into 3-dimensional shapes. A high-performance elastic adhesive bonds each window to the structure. A flexible white sealant fills the small gap between the edge of the window and the structure.
Each window has a band of white paint over the area where it bonds to the structure. The canopy window also has a screened area above the pilots’ heads. This is a sun-shade. New windows are painted by the manufacturer.
% B. Front Canopy and Emergency Windows
The one-piece canopy window covers the pilots’ cockpit. It is also the windscreen. It has a small % emergency window (direct-vision panel) on the left side. Some airplanes also have an emergency % window on the right side. The emergency windows have a hinge. You can open the emergency % windows in flight.
% C. 'Pop out' Windows (O.M 40-086)
% The emergency windows can be furnished with optional small 'pop out' windows for ventilation % (O.M 40-086).
% D. Rear Windows
The passenger door has a window for the left side of the passenger compartment. The right side of the fuselage also has a window for the passenger compartment.
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Maintenance Practices
1. General
This Section tells you how to replace or repair damaged windows. See Section 12-30 for data on cleaning windows.
2. Replace a Window
You must cut the window to replace it!
A. Equipment.
Item  Quantity  Part Number 
High-speed rotary grinder.  1  Commercial. 
Terostat adhesive.  A/R  9280 
White sealant.  A/R 

B. Procedure
Detail Steps/Work Items  Key Items/References 
(1)  Remove the canopy or door. Put the canopy or door on a firm working surface.  Only if you will replace the canopy or door window. Refer to Section 52-10. 
(2)  Put protective covers over the inside of the cockpit.  Only if you will replace the right fuselage window. 
(3)  Cut the damaged window from the frame.  Use the high-speed rotary grinder. 
(4)  Grind the frame to remove the remaining window material and adhesive. 
　
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