Garmin GTX 330 User manual

190-00734-11 May 2013 Rev. 1
Aircraft Make, Model, Registration Number, and Serial Number along with
applicable STC Configuration information must be completed in Appendix A and
saved as aircraft permanent records.
GTX 330/33 with ADS-B Out
System Maintenance Manual
Contains
Instructions for Continued Airworthiness for STC SA01714WI
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190-00734-11 GTX 330/33 with ADS-B Out
Rev. 1 Maintenance Manual with ICA
© Copyright 2013
Garmin Ltd. or its subsidiaries
All Rights Reserved
Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted,
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written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual
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to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of
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any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.
Garmin International, Inc.
1200 E. 151st Street
Olathe, KS 66062 USA
Telephone: [phone]
www.garmin.com
Garmin (Europe) Ltd.
Liberty House, Bulls Copse Road
Hounsdown Business Park
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Phone: [phone]
Fax: [phone]
Garmin AT, Inc.
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Salem, OR 97302 USA
Telephone: [phone]
RECORD OF REVISIONS
Revision Revision Date Description ECO #
1 5/1/13 Initial Release -----
DOCUMENT PAGINATION
Section Pagination
Table of Contents v
Section 1 1-1 to 1-4
Section 2 2-1 to 2-4
Section 3 3-1 to 3-4
Section 4 4-1 to 4-6
Section 5 5-1 to 5-8
Section 6 6-1 to 6-4
Section 7 7-1 to 7-4
Section 8 8-1 to 8-2
Section 9 9-1 to 9-2
Appendix A A-1 to A-12
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INFORMATION SUBJECT TO EXPORT CONTROL LAWS
This document may contain information which is subject to the Export Administration Regulations
("EAR") issued by the United States Department of Commerce (15 CFR, Chapter VII, Subchapter C) and
which may not be exported, released, or disclosed to foreign nationals inside or outside of the United
States without first obtaining an export license. A violation of the EAR may be subject to a penalty of up
to 10 years imprisonment and a fine of up to $1,000,000 under Section 2410 of the Export Administration
Act of 1979. Include this notice with any reproduced portion of this document.
DEFINITIONS OF WARNINGS, CAUTIONS AND NOTES
WARNING
Warnings are used to bring to the installer’s immediate attention that not only damage
to the equipment but personal injury may occur if the instruction is disregarded.
CAUTION
Cautions are used to alert the individual that damage to equipment may results if the
procedural step is not followed to the letter.
NOTE
Notes are used to expand and explain the preceding step and provide further
understanding of the reason for the particular operation.
WARNING
This product, its packaging, and its components contain chemicals known to the State
of California to cause cancer, birth defects, or reproductive harm. This notice is being
provided in accordance with California's Proposition 65. If you have any questions or
would like additional information, please refer to our web site at
www.garmin.com/prop65.
CAUTION
The GTX 330 and GTX 330D have a display that is coated with a special anti-reflective
coating and is very sensitive to waxes and abrasive cleaners. CLEANERS
CONTAINING AMMONIA WILL HARM THE ANTI-REFLECTIVE COATING. It is
very important to clean the display using a microfiber cloth or with a clean, lint-free
cloth and an eyeglass lens cleaner that is safe for anti-reflective coatings
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Table of Contents
1INTRODUCTION............................................................................................................................................ 1-1
1.1CONTENT,SCOPE,PURPOSE .......................................................................................................................... 1-1
1.2ORGANIZATION ............................................................................................................................................. 1-1
1.3APPLICABILITY.............................................................................................................................................. 1-2
1.4PUBLICATIONS .............................................................................................................................................. 1-2
1.5REVISON AND DISTRIBUTION ........................................................................................................................ 1-2
1.6REFERENCE.................................................................................................................................................... 1-2
2SYSTEM DESCRIPTION................................................................................................................................ 2-1
2.1GTX 330/330D............................................................................................................................................... 2-1
2.2GTX 33/33D................................................................................................................................................... 2-2
3GTX CONTROL & OPERATION................................................................................................................... 3-1
3.1GTX 330/330D............................................................................................................................................. 3-1
3.2GTX 33/33D................................................................................................................................................. 3-3
4INSTRUCTIONS FOR CONTINUED AIRWORTHINESS...........................................................................4-1
4.1APPLICABILITY.............................................................................................................................................. 4-1
4.2AIRWORTHINESS LIMITATIONS...................................................................................................................... 4-1
4.3SERVICING INFORMATION ............................................................................................................................. 4-1
4.4MAINTENANCE INTERVALS ........................................................................................................................... 4-2
4.5VISUAL INSPECTION...................................................................................................................................... 4-4
4.6ELECTRICAL BONDING TEST ......................................................................................................................... 4-5
4.7ADDITIONAL INSTRUCTIONS .......................................................................................................................... 4-6
5TROUBLESHOOTING.................................................................................................................................... 5-1
5.1GTX GENERAL TROUBLESHOOTING.............................................................................................................. 5-1
5.2GTX FAILURE ANNUNCIATIONS.................................................................................................................... 5-2
5.3CONNECTOR PINOUT INFORMATION .............................................................................................................. 5-3
6UNIT REMOVAL AND REINSTALLATION ............................................................................................... 6-1
6.1GTX 330/330D............................................................................................................................................. 6-1
6.2GTX 33/33D................................................................................................................................................. 6-3
6.3TRANSPONDER ANTENNA.............................................................................................................................. 6-4
7SOFTWARE..................................................................................................................................................... 7-1
7.1SOFTWARE CHECK ........................................................................................................................................ 7-1
7.2SOFTWARE UPDATE ...................................................................................................................................... 7-2
7.3SOFTWARE LOADING..................................................................................................................................... 7-2
8SYSTEM CONFIGURATION AND CHECKOUT......................................................................................... 8-1
8.1OVERVIEW................................................................................................................................................. 8-1
8.2SYSTEM CHECKOUT....................................................................................................................................... 8-1
8.3CONFIGURATION............................................................................................................................................ 8-1
8.4GTX TEST..................................................................................................................................................... 8-2
9SYSTEM RETURN TO SERVICE PROCEDURE......................................................................................... 9-1
9.1MAINTENANCE RECORDS.............................................................................................................................. 9-1
APPENDIX A.INSTALLATION SPECIFIC DATA......................................................................................... A-1
TABLE OF FIGURES
FIGURE 1. GTX 330/330D TRANSPONDER ................................................................................................................. 2-1
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FIGURE 2. GTX 330 OR GTX 330D INTERFACE SUMMARY........................................................................................ 2-2
FIGURE 3. GTX 33/33D TRANSPONDER ..................................................................................................................... 2-3
FIGURE 4. GTX 33 OR GTX 33D INTERFACE SUMMARY............................................................................................ 2-3
FIGURE 5. GTX 330/330D FRONT PANEL................................................................................................................... 3-1
FIGURE 6. GTN 7XX TRANSPONDER CONTROL ......................................................................................................... 3-4
FIGURE 7. GTN 6XX TRANSPONDER CONTROL ......................................................................................................... 3-4
FIGURE 8. BONDING CHECK ....................................................................................................................................... 4-5
FIGURE 9. REAR VIEW,CONNECTOR P3301............................................................................................................... 5-3
FIGURE 10. GTX 330 MOUNTING RACK/CONNECTOR ASSEMBLY ............................................................................. 6-2
FIGURE 11. GTX 33 MOUNTING RACK/CONNECTOR ASSEMBLY ............................................................................... 6-3
FIGURE 12. GTX 330 STATUS PAGE........................................................................................................................... 7-1
FIGURE 13. GTN 6XX/7XX SYSTEM PAGE................................................................................................................ 7-2
FIGURE 14. SOFTWARE UPDATE CONNECTION........................................................................................................... 7-2
Table of Tables
TABLE 1. GARMIN GTX 330/33 WITH ADS-B OUT REFERENCE DOCUMENTATION ................................................... 1-2
TABLE 2. GTN 7XX SERIES TRANSPONDER CONTROL REFERENCE DOCUMENTS...................................................... 3-3
TABLE 3. GTN 6XX SERIES TRANSPONDER CONTROL REFERENCE DOCUMENTS...................................................... 3-3
TABLE 4. MAINTENANCE INTERVALS......................................................................................................................... 4-2
TABLE 5. GTX ELECTRICAL LOAD............................................................................................................................. 4-6
TABLE 6. GTX (ALL MODELS)TRANSPONDER TROUBLESHOOTING .......................................................................... 5-1
TABLE 7. GTX 330/330D TRANSPONDER FAILURE/FAULT MESSAGES...................................................................... 5-2
TABLE 8. GTX 33/33D TRANSPONDER FAILURE/FAULT MESSAGES.......................................................................... 5-2
TABLE 9. CONNECTOR PINOUT................................................................................................................................... 5-3
TABLE 10. LIGHTING/POWER PIN ASSIGNMENTS ....................................................................................................... 5-5
TABLE 11. TEMPERATURE PROBE PIN ASSIGNMENTS................................................................................................. 5-6
TABLE 12. ENCODED ALTITUDE PIN ASSIGNMENTS................................................................................................... 5-6
TABLE 13. DISCRETE OUTPUTS .................................................................................................................................. 5-6
TABLE 14. DISCRETE INPUTS...................................................................................................................................... 5-7
TABLE 15. RS-232 CONNECTIONS.............................................................................................................................. 5-7
TABLE 16. ARINC 429 CONNECTIONS......................................................................................................................... 5-7
TABLE 17. #1 GTX 330/33 INTERFACED EQUIPMENT ............................................................................................... A-4
TABLE 18. #2 GTX 330/33 INTERFACED EQUIPMENT ............................................................................................... A-5
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190-00734-11 GTX 330/33 with ADS-B Out
Rev. 1 Maintenance Manual with ICA
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1 INTRODUCTION
1.1 CONTENT, SCOPE, PURPOSE
This document provides Instructions for Continued Airworthiness (ICA) for the Garmin GTX 330/33
with ADS-B Out functionality installed and compliant to version 2, under AML STC SA01714WI. This
document satisfies the requirements for continued airworthiness as defined by 14 CFR Part 23.1529 and
Appendix G. Information in this document is required to maintain the continued airworthiness of the
GTX 330/33.
1.2 ORGANIZATION
The following outline briefly describes the organization of this manual:
Section 2: System Overview
Provides a complete description of the type design change associated with installing a Garmin GTX
330/33 with ADS-B Out functionality. An overview of the GTX 330/33 with ADS-B Out system
interface is also provided.
Section 3: Control & Operation
Presents basic control and operation information specifically tailored to maintenance practices.
Section 4: Instructions for Continued Airworthiness
Provides maintenance instructions for continued airworthiness of the GTX 330/33 with ADS-B Out.
Section 5: Troubleshooting
Provides troubleshooting information to aid in diagnosing and resolving potential problems with the GTX
330/33 with ADS-B Out systems.
Section 6: Unit Installation & Removal
Gives instructions for the removal and replacement of a GTX 330/33.
Section 7: Software
Gives instructions for loading software on the Garmin GTX 330/33.
Section 8: System Configuration & Checkout
Gives instructions for configuring, and testing of the Garmin GTX 330/33.
Section 9: System Return to Service Procedure
Specifies return-to-service procedures to be performed upon completion of maintenance to the Garmin
GTX 330/33.
Appendix A: Aircraft Specific Information
Contains aircraft specific installation and configuration data for the Garmin GTX 330/33.
1.2.1 UNITS OF MEASURE
Unless otherwise stated, all units of measure are English units.
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1.3 APPLICABILITY
This document applies to all aircraft with GTX 330/33 with ADS-B Out functionality installed in
accordance with STC SA01714WI. Modification of an aircraft by this Supplemental Type Certificate
(STC) obligates the aircraft operator to include the maintenance information provided by this document in
the operator’s Aircraft Maintenance Manual and the operator’s Aircraft Scheduled Maintenance Program.
1.4 PUBLICATIONS
In addition to this manual, the following documents are required to perform maintenance. It is the
responsibility of the owner / operator to ensure latest versions of these documents are used during
operation, servicing or maintenance of the airplane.
Table 1. Garmin GTX 330/33 with ADS-B Out Reference Documentation
Document Garmin P/N
GTX 330/33 with ADS-B Out AML STC Equipment List 005-00734-05
1.5 REVISON AND DISTRIBUTION
This document is required for maintaining the continued airworthiness of the aircraft. When this
document is revised, every page will be revised to indicate current revision level.
Garmin Dealers may obtain the latest revision of this document on the Garmin Dealer Resource Center
website.
Owner/operators may obtain the latest revision of this document from the www.flyGarmin.com/ Support
page, or by contacting a Garmin dealer, contacting Garmin Product Support at 913-397-8200, toll free
866-739-5687, or using around the world contact information on www.flyGarmin.com.
A Garmin Service Bulletin describing the revision to this document will be sent to Garmin dealers if the
revision is determined to be significant.
1.6 REFERENCE
1.6.1 TERMINOLOGY
Except where specifically noted, references made to the ‘GTX’ or ‘GTX 330/33’ will equally apply to the
GTX 330/330D/33/33D. Additionally, ‘ADS-B’ refers to version 2 ADS-B Out only.
Throughout this document references will be made to ‘metallic’ aircraft. For the purposes of this manual,
metal aircraft will be those with an aluminum skin.
1.6.2 ACRONYMS
•AC: Advisory Circular
•ADC: Air Data Computer
•ADS-B: Automatic Dependant Surveillance – Broadcast
•ADS-B Out: The transmission of ownship position, altitude, velocity, and other information to
other aircraft and ATC ground based surveillance systems.
•AHRS: Attitude Heading Reference System
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•AML: Approved Model List
•ATCRBS: Air Traffic Control Radar Beacon System
•EGNOS: European Geostationary Navigation Overlay Service
•ES: Extended Squitter
•FAA: Federal Aviation Administration
•GNS: Garmin Navigation System
•GPS: Global Positioning System
•GTN: Garmin Touchscreen Navigator
•GTX: Garmin Transponder
•HSDB: High Speed Data Bus
•ICA: Instructions for Continued Airworthiness
•STC: Supplemental Type Certificate
•TAS: Traffic Advisory System
•TCAS: Traffic Alert and Collision Avoidance System
•TIS: Traffic Information Service
•TSO: Technical Standard Order
•WAAS: Wide Area Augmentation System
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2 SYSTEM DESCRIPTION
Automatic Dependent Surveillance-Broadcast (ADS-B) technology improves situational awareness and
flight safety. A Garmin transponder with ADS-B capabilities will automatically transmit position,
velocity, and heading information to other aircraft and ground stations. The current air traffic control
system depends on a transponder request for pertinent aircraft information, whereas ADS-B provides
automatic transmission of aircraft information without a request.
All Garmin transponders have a radio transmitter/receiver that operates on radar frequencies, receiving
ground radar or TCAS interrogations at 1030 MHz and transmitting a coded response of pulses to ground-
based radar on a frequency of 1090 MHz. Each unit is equipped with IDENT capability and will reply to
ATCRBS Mode A, Mode C and Mode S All-Call interrogation.
The Garmin transponders approved by this STC are the GTX 330 and GTX 33 (Non-Diversity Mode S
Transponders) and the GTX 330D and GTX 33D (Diversity Mode S Transponders). The ES option of
any of the transponders provides ADS-B Extended Squitter functionality.
2.1 GTX 330/330D
The GTX 330/330D transponders are panel mounted and contain an integrated display to inform the crew
of the current code, reply symbol and mode of operation. The GTX 330/330D screen also displays
pressure altitude, density altitude, temperature, and timer functions (depending on equipment connections
and configuration selection). The unit also features an altitude monitor, TIS traffic advisories and flight
timers. A voice or tone audio output announces altitude deviation, TIS traffic advisory and count down
timer expiration. Additionally, the GTX 330/330D display will annunciate when the unit is actively
transmitting ADS-B information.
The GTX 330/330D feature multiple transmit/receive ARINC 429 and RS-232 data ports. The units
concentrate data from three ARINC 429 inputs, gray code, RS-232 input data and discrete inputs to the
high-speed ARINC 429 output bus used by display systems such as the Garmin 400 Series/500 Series
units.
The Garmin GTX 330/330D panel mounted transponder(s) is a stand alone transponder that can operate
via the faceplate or can communicate with the on-side GTN 6XX/7XX or GNS 4XX/5XX through RS-
232 digital interface. This STC installation allows for installation of two GTX 330 non-diversity
transponders, two GTX 330D Diversity transponders, one of each type, or a single transponder.
Power is provided by the aircraft’s existing Avionics Bus. Each non-diversity GTX 330 transponder
interfaces with a transponder antenna mounted to the bottom of the fuselage whereas each GTX 330D
diversity transponder interfaces to a transponder antenna mounted to the top of the fuselage as well as the
antenna mounted to the bottom.
Figure 2 provides a summary of the interfaces provided for the GTX 330 or GTX 330D.
Figure 1. GTX 330/330D Transponder
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Figure 2. GTX 330 or GTX 330D Interface Summary
2.2 GTX 33/33D
The GTX 33/33D transponders are remote mounted and require a display/control interface as provided by
the Garmin GTN 6XX/7XX Series Navigators in order to be installed in accordance with this STC. Basic
transponder functions of the GTX 33/33D are identical to that GTX 330/330D, only the GTX 33/33D are
remote mounted. As the GTX 33/33D installation requires the use of the GTN, many optional functions
are not required because control of the GTX is then handled through the GTN.
The Garmin GTX 33/33D transponder(s) communicates with the on-side GTN 6XX/7XX through RS-
232 digital interface. This STC installation allows for installation of two GTX 33 non-diversity
transponders, two GTX 33D Diversity transponders, or one of each type.
Power is provided by the aircraft’s existing Avionics Bus. Each non-diversity GTX 33 transponder
interfaces with a transponder antenna mounted to the bottom of the fuselage whereas each GTX 33D
diversity transponder interfaces to a transponder antenna mounted to the top of the fuselage as well as the
antenna mounted to the bottom.
Figure 4 provides a summary of the interfaces provided for the GTX 33 or GTX 33D.
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Figure 3. GTX 33/33D Transponder
Figure 4. GTX 33 or GTX 33D Interface Summary
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3 GTX CONTROL & OPERATION
All control and operation of GTX 330/330D transponder as normally used in flight occurs through the
front panel of the GTX. Control and operation of the remote mounted GTX 33/33D is handled through
the external interface provided via the GTN 6XX/7XX. Figure 6 and Figure 7 identify various interface
buttons for these units.
3.1 GTX 330/330D
Figure 5. GTX 330/330D Front Panel
Function Selector Switches
The function selection switches are:
OFF Powers off the GTX 330. Pressing the STBY, ON or ALT key powers on the transponder
displaying the last active identification code.
STBY Selects the standby mode. When in standby mode, the transponder does not reply to any
interrogations. Pressing and holding the STBY key selects ground (GND) mode if Automated
Airborne Determination is not otherwise selected from another source. When GND is
annunciated, the transponder does not respond to ATCRBS interrogations but squitters and
replies to discretely addressed Mode S interrogations.
ON Selects Mode A and Mode S. In this mode, the transponder replies to Mode A, Mode C and
Mode S interrogations, as indicated by the Reply Symbol (“®”),
b
ut the replies do not include
altitude information.
ALT Selects Mode A, Mode C and Mode S. In ALT mode, the transponder replies to identification,
altitude and Mode S interrogations as indicated by the Reply Symbol (“®”). Replies to altitude
interrogations include the standard pressure altitude received from an external altitude source,
which is not adjusted for barometric pressure. The ALT mode may be selected in aircraft not
equipped with an optional altitude encoder; however, the reply signal does not include altitude
information.
NOTE
Any time the function switch is in the ON or ALT position the transponder becomes an
active part of the Air Traffic Control Radar Beacon System (ATCRBS). The
transponder also responds to interrogations from TCAS equipped aircraft.
IDENT Pressing the IDENT key activates the Special Position Identification (SPI) Pulse for 18
seconds, identifying the transponder return from others on an air traffic controller’s screen.
During the IDENT period the word ‘IDENT’ appears in the upper left corner of the display.
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VFR Sets the transponder code to the pre-
p
rogrammed VFR code selected in Configuration mode
(Set to 1200 at the factory). Pressing the VFR key again restores the previous identification
code.
NOTE
The VFR button is on (functional) by default, but can be disabled in configuration
mode
FUNC Changes the page shown on the right side of the display. Display data includes Pressure
Altitude, Flight Time, Altitude Monitor, Count Up and Count Down timers. In the
Configuration mode, steps through the function pages.
START Starts and stops the Altitude Monitor, Count Up, Count Down and Flight timers
STOP In Configuration mode, steps through functions in reverse.
CRSR Initiates entry of the starting time for the Count Down timer and cancels transponder code
entry. Selects changeable fields in Configuration mode.
CLR Resets the Count Up, Count Down and Flight timers. Cancels the previous key press during
code selection and Count Down entry. Used in Configuration mode.
8 Reduces Contrast and Display Brightness when the respective fields are displayed and enters
the number eight into the Count Down timer. Used in Configuration mode.
9 Increases Contrast and Display Brightness when the respective fields are displayed and enters
the number nine into the Count Down timer. Used in Configuration mode.
Code Selection
Code selection is entered with eight keys (0 – 7) providing 4,096 active identification codes. Pushing one
of these keys begins the code selection sequence. The new code is not activated until the fourth digit is
entered. Pressing the CLR key moves the cursor back to the previous digit. Pressing the CLR key when
the cursor is on the first digit of the code, or pressing the CRSR key during code entry, removes the
cursor and cancels data entry, restoring the previous code. You may press the CLR key up to five
seconds after code entry is complete to return the cursor to the fourth digit. The numbers 8 and 9 are not
used for code entry, only for entering a Count Down time, contrast and display brightness, and data
selection in the Configuration mode.
NOTE
The selected identification code should be entered carefully, either one assigned by air
traffic control for IFR flight or an applicable VFR transponder code.
Important Codes
1200 ⎯VFR code for any altitude in the US (Refer to ICAO standards elsewhere)
2000 ⎯VFR code commonly used in Europe (Refer to ICAO standards)
7000 ⎯VFR code commonly used in Europe (Refer to ICAO standards)
7500 ⎯Hijack code (Aircraft is subject to unlawful interference)
7600 ⎯Loss of communications
7700 ⎯Emergency
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Avoid selecting code 7500 and all codes in the 7600-7777 range. These codes trigger special indicators in
automated facilities. An aircraft’s transponder code is used for ATC tracking purposes, therefore exercise
care when making routine code changes.
Function Display
PRESSURE ALT Displays the altitude data supplied to the GTX 330 in feet, hundreds of feet (i.e.,
flight level), or meters, depending on configuration.
FLIGHT TIME Displays the Flight Time, controlled by the START/STOP key or by one of four
airborne sources (squat switch, GPS ground speed recognition, Airdata airspeed
recognition or altitude increase) as configured during installation. The timer begins
when the GTX 330 determines that the aircraft is airborne.
ALTITUDE
MONITOR Controlled by START/STOP key. Activates a voice alarm and warning annunciator
when altitude limit is exceeded
OAT/DALT Displayed when the GTX 330 is configured with temperature input. Displays
Outside Air Temperature and Density Altitude.
COUNT UP
TIMER Controlled by START/STOP and CLR keys.
COUNT DOWN
TIMER Controlled by START/STOP, CLR, and CRSR keys. The initial Count Down time
is entered with the 0 – 9 keys.
CONTRAST This page is only displayed if manual contrast mode is selected in Configuration
mode. Contrast is controlled by the 8 and 9 keys.
DISPLAY This page is only displayed if manual backlighting mode is selected in
Configuration mode. Backlighting is controlled by the 8 and 9 keys.
ADS-B TX Controlled by START/STOP key. Starts/stops extended squitter function.
FLIGHT ID If system is configured for FLT ID PWR-UP ENTRY at installation, the FLIGHT
ID entry page will be present on power up of GTX 330. This allows the pilot/crew to
enter the specific Flight ID for transmission to ATC interrogations.
3.2 GTX 33/33D
Figure 6 shows a screenshot of the GTX control page associated with the GTN 7XX series touchscreen
navigator. Refer to the following Garmin documents for details regarding the controls and their functions.
Table 2. GTN 7XX Series Transponder Control Reference Documents
Document Title Document Number
GTN 725/750 Cockpit Reference Guide (CRG) 190-01007-04
GTN 725/750 Pilot’s Guide 190-01007-03
Figure 7 shows a screenshot of the GTX control page associated with the GTN 6XX series touchscreen
navigator. Refer to the following Garmin documents for details regarding the controls and their functions.
Table 3. GTN 6XX Series Transponder Control Reference Documents
Document Title Document Number
GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04
GTN 625/635/650 Pilot’s Guide 190-01004-03
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3-4
Figure 6. GTN 7XX Transponder Control
Figure 7. GTN 6XX Transponder Control
The document reference is online, please check the correspondence between the online documentation and the printed version.

The document reference is online, please check the correspondence between the online documentation and the printed version.

GTX 330/33 with ADS-B Out 190-00734-11
Maintenance Manual with ICA Rev. 1
4-2
•Calibrated pitot/static ramp tester
•Outdoor line-of-site to GPS satellite signals or GPS indoor repeater
•Ground Power Unit (Capable of supplying aircraft power)
4.4 MAINTENANCE INTERVALS
Table 4 shows systems and items, installed by this STC, which must undergo tests or checks at specific
intervals. Those inspections that are based on calendar elapsed time shall have specific intervals stated in
Table 4.
NOTE
The maintenance intervals listed in the table below must be adhered to for each
installed GTX.
Table 4. Maintenance Intervals
Item Description/Procedure Section No. Interval
Equipment Removal
& Reinstallation Removal and reinstallation of GTX LRUs 6 On Condition
Testing The GTX 330/33 transponders must be tested and shown to comply with Title 14 CFR Part
91.225 and 91.227. 8.4 Replacement of GPS
Position source(s).
Cleaning
The GTX 330 display and bezel may be
cleaned periodically when required.
Cleaning can be accomplished using a soft
cotton cloth dampened with clean water.
DO NOT use any chemical cleaning agents.
Care should be taken to avoid scratching the
surface of the display.
N/A On Condition
Testing
The GTX 330/33 transponders must be tested
and shown to comply with Title 14 CFR Part
91.411, 91.413, 91.225, 91.227 and Part 43
Appendix E and F.
8.4 24 Calendar Months
Equipment Visual
Inspection A visual inspection of the equipment installed by this STC must be performed. 4.5 12 Calendar Months
Electrical Bonding
Test An electrical bonding test must be performed on equipment installed by this STC. 4.6 10 Years or 2000 hours
Antenna Visual
Inspection Removal and replacement 4.5 On Condition
Lightning Protection
Electrical Bonding
Test Perform the electrical bonding resistance check 4.6 On Condition
The document reference is online, please check the correspondence between the online documentation and the printed version.