Installation Overview
190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 9
Page 3-27
3.16 Electrical Bonding
Make sure the transponder and GPS antennas are electrically bonded to the aircraft.
3.17 Cabling and Wiring
Use AC 43.13-1B chapter 11, sections 8 through 13 to install wiring. The considerations are:
1.
It should not be possible for the cable harness to be exposed to wire chafing.
2.
The cable harness should not be located near flight control cables, high capacity electrical lines (e.g., DC electric
motor cables), or fuel lines.
3.
Do not put cables near high energy sources (e.g., DC motors, high heat sources).
4.
Wiring that must be shielded must be done as shown in appendix D.
5.
Shield pigtail lengths must be less than 3.0 inches.
3.18 Electrical Bonding Considerations
Bond electrical equipment, supporting brackets, and racks to the aircraft’s main structure. When surface preparation is
necessary to get an electrical bond refer to SAE ARP 1870 section 5. To measure the resistance of the bond between
the equipment and the adjacent aircraft structure use a calibrated milliohm meter. The bond must have a DC resistance
no more than 2.5 milliohms.
3.19 Cooling Requirements and Considerations
There are no cooling requirements or considerations for the GTX 3X5. The chassis has provisions for a fan, however,
one is not necessary or provided.
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