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3.4 Installation Considerations
NOTE
Installation instructions are for use in synchronization with the avionics installation
practices in AC 43.13-1B, AC 43.13-2B, and FAA approved revisions.
Installation considerations:
Installation of a GTX 335 system may require the avionics shelves to be changed, or require a new
structure.
A new wiring harness is required.
A change of the static pressure system may be necessary if a compatible altitude encoder is not
installed. Refer to the minimum system configurations for additional considerations.
3.5 GTX Series Minimum System Configurations
The minimum system required items for GTX 335 ADS-B Out (only) installation:
GTX 335 transponder with the USB dongle cable provided
Transponder antenna
Approved GPS/SBAS antenna
Approved altitude source
◦
Optional GAE
3.6 Crimping Tools
Connectors used for the GTX series transponders use crimp contacts. Refer to table 3-5 for the recommended
contact crimping tools for D-Sub connectors.
Manufacturer
Hand Crimping Tool
Military Spec.
M22520/2-01
Positronic
9507-0-0-0
AMP
601966-1
Daniels
AFM8
Astro
615717
3.7 Test Equipment
This test equipment is required for the installation:
Ramp tester with traffic (e.g., IFR 6000 or equivalent for system performance and checkout).
Pitot/static test set for system performance and checkout for altitude reporting verification.
To measure the electrical bonding between system components and aircraft ground, a milliohm
meter with a precision of ±0.1 mΩ or better is required.
An ammeter with a precision of ±0.5 amps and a current capacity sufficient for the total aircraft
load for the ELA.
190-00734-17
Rev. 1
Table 3-5 Recommended Crimping Tools
M22520/2-09
9502-4-0-0
601966-6
K42
615725
High Density 22-28 AWG
Positioner
Insertion/ Extraction Tool
M81969/14-01 M81969/1-04
4811-2-0-0
91067-1
M81969/1-04
M81969/1-04
GTX 335 w/GPS Installation Guidance
Page 3-4
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