4.7 Equipment Rack Installation; Panel Mount Units; Standard Remote Mount Units - Garmin GTX 3X5 Installation Manual

4.7 Equipment Rack Installation

4.7.1

Panel Mount Units

CAUTION
Exercise caution when installing the rack in the instrument panel. Deformation of the rack
will make it difficult to install and remove the GTX 3X5.
NOTE
If the front lip of the mounting rack is behind the surface of the aircraft panel, the
GTX 3X5 connectors may not fully engage. Refer to appendix B for more information.
NOTE
Make sure no screw heads or other obstructions prevent the unit from fully engaging in the
rack. Refer to figure B-9 for drawing dimensions necessary to prepare the cutouts for the
GTX 3X5 unit. The GTX 3X5 mounting rack may also be used as a template for drilling
the mounting holes.
NOTE
Step 3 can be done before or after the wire harness is installed in the aircraft.
1. Install the rack in a rectangular hole (or gap between units) in the instrument panel, typically in the
radio stack. The lower front lip of the rack should be flush with, or extend slightly beyond, the
finished aircraft panel.
2. Use six #6-32 flat head screws and self-locking nuts to install the rack in the aircraft panel. The
screws are inserted from the inside through holes in the sides of the rack.
3. Use provided screws to attach the connector(s) to the backplate.
4. Align the backplate so the backplate screw heads pass through the keyed holes in the back of the
rack.
5. Use two #4-40 flat head screws to attach the GAE to the backplate, if used. Refer to figure B-11.
6. Connect the wire harness to the GAE, if used. Refer to figure B-9.
7. Slide the backplate to the left (viewing from the front of the unit) until an audible click is heard.
8. Attach the backplate by tightening the four #4-40 screws.
4.7.2

Standard Remote Mount Units

NOTE
The Bluetooth antenna in the GTX 345 is at the front of the unit and must point to the
passenger area to provide the best Bluetooth connection. Bluetooth performance from a
remote unit can be limited due to obstructions in the aircraft. In this situation, better
performance can be obtained by using a Flight Stream 110/210.
The GTX 3X5 standard remote mount racks can be mounted in any orientation as long as all six mounting
screws are attached to a mounting bracket. Design the mounting bracket(s) for the GTX 3X5 unit with the
dimension shown in figure B-4.
Attach the connectors and optional GAE, if used, to the connector backplate the same way as panel mount
units. Refer to section 4.7.1.
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Rev. 4
GTX 3X5 Transponder TSO Installation Manual
Page 4-11