Limitations; Operational Limitations; Installation Limitations - Garmin GTX 335 w GPS Installation Guidance

2 LIMITATIONS

2.1

Operational Limitations ....................................................................................................................2-1

2.2

Installation Limitations .....................................................................................................................2-1

2.2.1 Equipment Interfaced to the GTX ..............................................................................................2-1
2.2.2 Preservation of Certified Systems ..............................................................................................2-2
2.2.3 Major Alterations .......................................................................................................................2-2
2.2.4 Antennas.....................................................................................................................................2-2
2.2.5 Pressurized Aircraft....................................................................................................................2-2
2.1 Operational Limitations
Refer to the AFMS for operational limitations. It is available
process.
All functions of the GTX 335 transponders meet the applicable design assurance qualifications for
airplane Class I, Class II, Class III, and Class IV in accordance with AC 23.1309-1E figure 2.
2.2 Installation Limitations
GTX 335 panel mounted units must be installed within reach of the pilot and the display must be viewable
by the pilot with minimal head movement. If replacing a transponder with the GTX 335, the unit can be
installed in the same location as a previously installed transponder.
The Air Tractor AT-401 series, AT-402 series, and AT-502 series aircraft specified on the AML must have the
optional avionics mounting installation (P/N 61337-X) installed as a prerequisite for the installation of a
panel mount transponder. The Air Tractor AT-504 aircraft specified on the AML must have the optional
avionics mounting installation (P/N 13750-X) installed as a prerequisite for the installation of a panel
mount transponder.
The GAE should not be used as the altitude source in aircraft certified to fly above 30,000 feet. The GTX
should be installed in temperature controlled environments in aircraft certified to fly above 25,000 feet.
Refer to the applicable environmental qualification form to identify more GTX installation limitations for
the possible LRU installation.
The GTX 335 units with main software version 2.03 and prior do not allow TIS-A display using the
ARINC-429 interface.
2.2.1 Equipment Interfaced to the GTX
The interface connections between the GTX 335 and other aircraft systems as specified in this manual are
approved in the GTX 33/330 and GTX 3X5 AML STC. If the GNS 430W/530W and GTN 6XX/7XX are
both interfaced to a GTX 335 unit for TIS-A traffic, the GNS 430W/530W must be the TIS-A on/off control
source and the GTN 6XX/7XX TIS-A control must be off.
The GTX 335 is not approved to interface with TCAS II traffic systems. Additional interfaces not supported
by this STC for the GTX 3X5 are as follows.
Installation of switches.
Installation of outside air temperature probes.
190-00734-17
Rev. 1
through the single-use registration code
GTX 335 w/GPS Installation Guidance
Page 2-1