Garmin GTX Series Removal/Installation Instructions

GARMIN GTX SERIES TRANSPONDER SYSTEM - REMOVAL/INSTALLATION
1. General
A. This section gives the removal and installation procedures for the Garmin GTX-Series Transponders. For a general
overview of the Garmin GTX Series Transponder System refer to Garmin GTX Series Transponder System - Description
and Operation.
B. The procedure for removing the Garmin GTX Series Transponder(s) is typical unless otherwise noted by Transponder
Series number.
(1) The Garmin GTX 327 and GTX 330 Transponder Systems are NOT used with the G1000 Integrated Avionics suite
and have different removal/installation instructions.
C. Some transponder(s) have additional functionality and will only work with a particular G1000 software configuration.
Become familiar with the installed software version, refer to Chapter 34, G1000 Integrated Avionics System - Description
and Operation.
2. Tools and Equipment
NOTE: For the supplier publication part number and manufacturer data, refer to the Introduction Supplier
Publication List.
A. Tools and Equipment
• None.
B. Special Consumable's
• This procedure does not require the use of any special consumable materials.
C. External Reference Material
• Garmin G1000 Caravan Line Maintenance Manual. Refer to the Introduction, Supplier Publication List.
3. Setup
A. Prepare the Airplane
(1) Make sure that the BATTERY switch, found on the circuit breaker switch panel, is in the OFF position.
(2) Make sure that the AVIONICS switches on the circuit breaker switch panel, are in the OFF position.
(3) Disconnect external electrical power from the airplane.
(4) Disengage the applicable circuit breaker given in Table 401.
Table 401. Circuit Breakers
Circuit Breaker Name
XPDR 1
XPDR 2 (Optional with second transponder installation)
(5) Remove the MFD from the instrument panel. Refer to Garmin Display Unit - Removal/Installation.
4. GTX Series Transponder Removal (GTX-33, GTX-33ES, GTX-335R and GTX-345R)
CAUTION: Be careful when you remove and install electronic components. Electronic components are extremely
sensitive to electrostatic discharge damage. Such damage cannot be seen by visual inspection and can
make the component unserviceable. Refer to Chapter 20, Electrostatic Discharge Components -
Maintenance Practices and the Model 208 Wiring Diagram Manual Chapter 20, Electrical Safety
Precautions - Description and Operation for procedures to correctly work with electronic components.
A. Remove the GTX Series Transponder (Refer to Figure 401).
NOTE: For removal of the GTX-327 and GTX-330, refer to this document, Garmin GTX 327 and Garmin GTX
330 Transponder Removal/Installation.
(1) For GTX-33/GTX-33ES, loosen the lock lever screw, but do not remove it from the lock lever.
NOTE:
(a) Lift the lock lever to release the transponder from the avionics rack.
(2) For GTX-335R/GTX-345R, loosen the 3/32" hexhead screw, but do not remove it.
(a) Lift the lock tab to release the transponder from the avionics rack.
Copyright © Textron Aviation Inc.
Retain printed data for historical reference only. For future maintenance, use only current data.
The screw is captive to the lock lever.
Model 208/208B Maintenance Manual (Rev 33)
Circuit Breaker Location
Avionics Circuit Breaker Panel
Avionics Circuit Breaker Panel
Print Date: Thu May 18 07:52:52 CDT 2023
34-54-20-4 (Rev 33)
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