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190-00734-11

GTX 33X and GTX 3X5 ADS-B Maintenance Manual

Rev. 6

Page 2-1

2 SYSTEM DESCRIPTION

2.1 GTX 330/330D ................................................................................................................... 2-2
2.2 GTX 33/33D ....................................................................................................................... 2-4
2.3 GTX

335/335R ................................................................................................................... 2-6

345/345R ................................................................................................................... 2-8

2.5 GTX 335R/345R with Legacy G1000 .............................................................................. 2-10
2.6 Electrical Load Information.............................................................................................. 2-11

Garmin GTX 33X and GTX 3X5 units operate on radar frequencies, receiving ground radar or TCAS
interrogations. The GTX transmits a coded response of pulses to ground-based radar on a frequency of
1090 MHz. Each unit has IDENT capability and replies to ATCRBS Mode A, Mode C and Mode S
All-Call interrogation. The GTX 345/345R units include ADS-B In which provides TIS-B and FIS-B data
via UAT and 1090 MHz. The GTX 3X5 units offer an optional Garmin altitude encoder to meet the
required barometric pressure altitude source and an optional internal GPS/SBAS source to meet the
required GNSS position source integrity for ADS-B Out.

The Garmin transponders approved by this STC are in the family of GTX 33X and GTX 3X5 transponders.

The ES option of the GTX 33X units provides ADS-B extended squitter functionality.
The GTX 33X models include:



GTX 33



GTX 330



GTX 33D



GTX 330D

The GTX 3X5 units all provide ADS-B Out functionality. GTX 345/345R units provide ADS-B In.
The GTX 3X5 models include:



GTX 335



GTX 345



GTX 335R



GTX 345R

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.

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Summary of Contents for GTX GTX 330D

Page 1: ...Maintenance Manual Contains Instructions for Continued Airworthiness for STC SA01714WI Aircraft make model registration number and serial number and accompanying STC configuration information in appendix A must be completed and saved with aircraft permanent records ...

Page 2: ...to is strictly prohibited Garmin is a registered trademark of Garmin International or its subsidiaries GDU and GTN are trademarks of Garmin International or its subsidiaries These trademarks may not be used without the express permission of Garmin Adobe is a registered trademark of Adobe Systems Incorporated All rights reserved The Bluetooth word mark and logos are registered trademarks owned by B...

Page 3: ...main and ADS B software to v2 05 4 07 21 16 Added GTX 3X5 vertical mount 3 03 03 16 Added GTX 3X5 products 2 09 18 14 Minor edits Refer to Current Revision Description for details 1 05 01 13 Initial release Section Page Description 3 1 3 2 Removed directions for software v7 01 or earlier 5 1 5 2 Replaced Figure 5 1 with improved troubleshooting flowchart 5 2 5 3 Replaced Figure 5 4 Sheets 1 5 with...

Page 4: ... NOTES 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 website at www garmin com prop65 WARNING Perchlorate Material special handlin...

Page 5: ...ONS FOR CONTINUED AIRWORTHINESS 4 1 4 1 Applicability 4 1 4 2 Airworthiness Limitations 4 1 4 3 Servicing Information 4 2 4 4 Maintenance Intervals 4 3 4 5 Visual Inspection 4 4 4 6 Electrical Bonding Test 4 6 4 7 Additional Instructions 4 6 5 TROUBLESHOOTING 5 1 5 1 GTX General Troubleshooting 5 1 5 2 GTX Failure Annunciations 5 3 5 3 GTX 33X Connector Pinout Information 5 14 5 4 GTX 3X5 Connecto...

Page 6: ...0 Only 8 8 9 SYSTEM RETURN TO SERVICE PROCEDURE 9 1 9 1 Maintenance Records 9 1 APPENDIX A INSTALLATION SPECIFIC INFORMATION A 1 APPENDIX B SPECIAL BONDING PROCEDURES B 1 B 1 Considerations for Untreated or Bare Dissimilar Metals B 1 B 2 Preparation of Aluminum Surfaces B 4 B 3 Composite Aircraft B 4 B 4 Tube and Fabric Aircraft B 9 B 5 Bonding Jumper B 12 ...

Page 7: ...tall Tool Failure Fault MessagesTransponder Alerts 5 9 Figure 5 6 Rear View Connector P3301 5 14 Figure 5 7 GTX 33 330 ARINC 429 Connections 5 18 Figure 5 8 Rear View Connector J3251 5 19 Figure 5 9 Rear View Connector J3252 5 21 Figure 6 1 GTX 330 Mounting Rack Connector Assembly 6 2 Figure 6 2 GTX 33 Mounting Rack Connector Assembly 6 3 Figure 6 3 GTX 3X5 Connector Kits 6 4 Figure 6 4 GTX 3X5 wi...

Page 8: ...e B 2 Electrical Bonding Preparation Bolt Nut Joint B 1 Figure B 3 Electrical Bond Preparation Terminal Lug B 1 Figure B 4 Fiberglass Insulation for Carbon Material B 5 Figure B 5 Aluminum Tape Joint B 6 Figure B 6 Aluminum Tape Ground Termination B 7 Figure B 7 Remote GTX Aluminum Tape Installation B 8 Figure B 8 Electrical Bonding Using Conductive Clamp B 11 Figure B 9 Bonding Strap B 13 ...

Page 9: ...rable Output Pins 5 24 Table 5 11 GTX 3X5 3X5R Discrete Inputs 5 25 Table 5 12 GTX 3X5 3X5R Configurable Input Pins 5 26 Table 5 13 GTX 3X5 3X5R RS 232 Connections 5 26 Table 5 14 GTX 3X5 3X5R ARINC 429 Connections 5 27 Table 5 15 GTX 3X45 3X45R RS 422 Connections 5 27 Table 5 16 GTX 345 345R HSDB Connections 5 28 Table 6 1 GTX 3X5 Connector Kit Hardware 6 4 Table 6 2 Standard G1000 Mount Back Pla...

Page 10: ...n information specifically tailored to maintenance practices Section 4 Instructions for Continued Airworthiness Provides instructions for continued airworthiness of the GTX 33X and GTX 3X5 ADS B units Section 5 Troubleshooting Provides troubleshooting information to aid in diagnosing and resolving problems with GTX 33X and GTX 3X5 system equipment Section 6 Unit Removal and Reinstallation Provides...

Page 11: ...Revision and Distribution This document is required for maintaining the continued airworthiness of the aircraft Garmin Dealers may obtain the latest revision of this document at the Garmin Dealer Resource Center website Dealers are notified of manual revision changes via a Garmin Service Bulletin Owner and operators may obtain the latest revision of this document at www flyGarmin com or by contact...

Page 12: ...ponder without interrogation from a controller s radar 1 6 2 Acronyms AC Advisory Circular ICA Instructions for Continued Airworthiness ADC Air Data Computer ICAO International Civil Aviation Organization ADS B Automatic Dependent Surveillance Broadcast I O Input Output AHRS Attitude Heading Reference System MFD Multifunction Display AML Approved Model List PED Portable Electronic Device ATC Air T...

Page 13: ...etric pressure altitude source and an optional internal GPS SBAS source to meet the required GNSS position source integrity for ADS B Out The Garmin transponders approved by this STC are in the family of GTX 33X and GTX 3X5 transponders The ES option of the GTX 33X units provides ADS B extended squitter functionality The GTX 33X models include GTX 33 GTX 330 GTX 33D GTX 330D The GTX 3X5 units all ...

Page 14: ...e air temp Display of flight timers Audio output TIS A traffic output to a compatible display The transponder annunciates when the unit has an ADS B Out failure to alert the crew that the unit has a degraded ADS B system GTX 330 330D units communicate through the following interfaces ARINC 429 RS 232 Gray code Discrete I O Power is provided by the aircraft s existing avionics bus Non diversity GTX...

Page 15: ... 330D Interface Summary GTX 330 or GTX 330D Bottom Antenna GTX 330D Installs Only Traffic System Audio Panel Optional Interfaces Heading Source Secondary GPS Display Required Interfaces Altitude Source Power Ground Top Antenna GPS Temperature Squat Switch External STBY External Ident Radar Altitude ...

Page 16: ...put TIS A traffic output to a compatible display Requires supported external control and display system The transponder annunciates when the unit has an ADS B Out failure to alert the crew that the unit has a degraded ADS B system GTX 33 33D units communicate through the following interfaces ARINC 429 RS 232 Gray code Discrete I O Power is provided by the aircraft s existing avionics bus Non diver...

Page 17: ...rface Summary GTX 33 or GTX 33D Bottom Antenna GTX 33D Installs Only Garmin GTN 6XX 7XX Or GNS 480 Traffic System Audio Panel Optional Interfaces Heading Source Secondary GPS Temperature Squat Switch Required Interfaces Altitude Source Power Ground Top Antenna External Ident External Standby Radar Altitude ...

Page 18: ...ternal GNSS receiver Optional altitude encoder module Entry and display of squawk code and flight ID Display of pressure altitude Display of outside air temp Display of density altitude Display of flight timers Audio output TIS A traffic output to a compatible display The transponder annunciates when the unit has an ADS B Out failure to alert the crew that the unit has a degraded ADS B system GTX ...

Page 19: ...io Panel Bottom Antenna GTX 3X5 with GPS only GTX 335R Control Power Ground Altitude Source Heading Source Air Data Source Secondary GPS Radio Altitude Source Existing LRU New LRU Legend Optional Interfaces Required Interfaces Squat Switch Garmin Altitude Encoder OR Temperature External Ident External Standby Traffic System For XPDR Cross Talk Keep Alive Input ...

Page 20: ...UAT receivers Optional internal GNSS receiver Optional altitude encoder module Entry and display of squawk code and flight ID Display of pressure altitude Display of outside air temp Display of density altitude Display of flight timers Audio output Bluetooth interface for display of weather and traffic on portable devices The transponder annunciates when the unit has an ADS B failure to alert the ...

Page 21: ...Antenna GPS Source Audio Panel Bottom Antenna GTX 3X5 with GPS only GTX 345R Control Power Ground Altitude Source Heading Source Air Data Source Secondary GPS Radio Altitude Source Existing LRU New LRU Legend Optional Interfaces Required Interfaces Squat Switch Bluetooth External Traffic Annunciator For No Display Install Garmin Altitude Encoder OR Temperature External Ident External Standby Keep ...

Page 22: ...e GTX 345R provides TIS B traffic and FIS B weather on PED via Bluetooth Refer to GTX 3XX Part 23 AML STC Installation Manual for additional information Figure 2 5 provides a basic summary of the GTX 335R or GTX 345R interface for the legacy G1000 system Figure 2 5 GTX 335R or GTX 345R Interface Summary with Legacy G1000 Bluetooth Device GTX 335R 345R GPS Antenna Audio Panel Bottom Antenna GTX 3X5...

Page 23: ... 14 VDC 28 VDC GTX 33 330 Maximum full TSO reply rate 3 1 A 1 6 A Maximum quiescent 1 1 A 0 85 A GTX 335 Input current typical 0 57 A 0 29 A Input current maximum 0 86 A 0 43 A GTX 335 GPS Input current typical 0 72 A 0 36A Input current maximum 1 22 A 0 61 A GTX 345 Input current typical 0 72 A 0 36 A Input current maximum 1 30 A 0 65 A GTX 345 GPS Input current typical 1 07 A 0 54 A Input curren...

Page 24: ...400W 500W Series Figure 3 3 and figure 3 4 show display units control of the transponder Figure 3 5 shows transponder control using the GNS 480 In specific installations the GDU 1XXX of the G1000 system provides control and operation of the remote mounted GTX 335R 345R units Section 3 4 describes the functions of the G1000 system NOTE The selected identification code should be entered carefully ei...

Page 25: ...ic Control Radar Beacon System ATCRBS The transponder responds to interrogations from TCAS equipped aircraft ALT Selects Mode A Mode C and Mode S Pressing the ALT key when the GTX 330 is powered off automatically powers on the unit in altitude reporting mode The transponder replies to identification altitude and Mode S interrogations as indicated by the reply symbol Replies to altitude interrogati...

Page 26: ...he 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 ac...

Page 27: ...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 DISP...

Page 28: ... Control Radar Beacon System ATCRBS The transponder responds to interrogations from TCAS equipped aircraft ALT Altitude mode is automatically selected when the aircraft becomes airborne using the unit s air ground logic or when the ALT key is pressed Pressing the ALT key when the GTX 335 345 is powered off automatically powers on the unit in altitude reporting mode While the aircraft is on the gro...

Page 29: ...to navigate through page groups in normal and 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 ...

Page 30: ...arm and warning annunciator when altitude limit is exceeded SAT DALT Displayed when the GTX 3X5 is configured with temperature input Displays Static Air Temperature and Density Altitude CONTRAST OFFSET Contrast is controlled by the 8 and 9 keys BACKLIGHT OFFSET This page is only displayed if photocell backlighting mode is selected in Configuration mode Backlighting is controlled by the 8 and 9 key...

Page 31: ...4 and figure 3 5 show the GTX control pages associated with the GTN 6XX 7XX and GNS 480 Refer to the specific pilot guide and cockpit reference guide for details regarding control and function Part numbers for these documents are listed in table 1 1 Figure 3 3 GTN 7XX Transponder Control Figure 3 4 GTN 6XX Transponder Control ...

Page 32: ...he GND soft key is unavailable with the GTX 3X5 transponders XPDR GND UNAVL will annunciate any time the GND soft key is pressed and the unit will revert to the previous mode the unit was in prior to the GND soft key being pressed ADS B TX The transmission of the ADS B information is enabled disabled by pressing the ADS B TX soft key ADS B transmission defaults to enabled at each power cycle In ol...

Page 33: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 3 10 Figure 3 6 G1000 Transponder Control ...

Page 34: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 3 11 Figure 3 7 G1000 Transponder Control ...

Page 35: ...it is in configuration mode Connect the USB cable between the GTX 3X5 and the computer Energize the GTX 3X5 3X5R and then run the GTX 3X5 Install Tool Figure 3 8 USB A and USB B Connectors The install tool is used to check equipment status load software and configure the unit To put a GTX 3X5 3X5R unit in configuration mode change Normal Mode to Configuration Mode in the unit mode window Click the...

Page 36: ...e State page of the GTX 3X5 Install Tool reports the current mode of the GTX 3X5 3X5R Flight ID Squawk Code and Pressure Altitude This page allows selection of Ground Test and Traffic Test modes This page also allows selection of Standby or Operate TCAS Modes Figure 3 9 GTX 3X5 3X5R State Page ...

Page 37: ...Maintenance Manual Rev 6 Page 3 14 3 5 2 Status Page The Status page reports failures faults warnings and pilot alerts Information such as whether there is a configuration module present is also displayed Figure 3 10 GTX 3X5 3X5R Status Page ...

Page 38: ...ration of identification code unit options and display options Interfaces page configuration of serial A429 discretes and HSDB settings Sensors page configuration of Garmin altitude encoder GPS internal AHRS and additional sensors Audio page configuration of audio options and alerts Display page configuration of display and key backlight photocell and lighting bus curves and default offsets All co...

Page 39: ...status of the necessary data supporting ADS B requirements Discretes reports status of discrete inputs outputs and allows the user to override the Output pins for testing purposes Connection status reports status of A429 inputs serial inputs and HSDB Internal GPS reports GPS acquisition status and signal strength Bluetooth reports Bluetooth receiver status and paired devices Assert log provides ab...

Page 40: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 3 17 Figure 3 12 GTX 3X5 3X5R Diagnostics Group ...

Page 41: ... and Audio Database information ADS B In page displays basic system FPGA and Boot Block information GPS page displays GPS and GPS loader information Garmin Altitude Encoder page displays altitude encoder serial number Configuration page displays configuration status of aircraft unit wiring and display CRCs Figure 3 13 GTX 3X5 3X5R Product Data Group 3 5 6 Software Upload Refer to section 7 3 for d...

Page 42: ......

Page 43: ...ibits conditions symptoms and or abnormalities as defined in section 5 of this manual Replacement and or servicing should be made only after the technician troubleshoots the system by using the guidance in this manual along with common avionics maintenance practices 4 3 2 Special Tools The following tools are needed to perform maintenance tasks Calibrated milliohm meter with an accuracy of 0 1 mil...

Page 44: ...ay N A On Condition Antenna Visual Inspection Removal and replacement 4 5 On Condition Lightning Strike Actual or Suspected Inspect the coaxial cable connections GTX bonding hardware including bonding straps and tape antenna and surrounding areas 4 5 On Condition The GTX 33 330 and GTX 3X5 receiver sensitivity must be tested and shown to comply with Title 14 CFR Part 43 Appendix F 8 6 On Condition...

Page 45: ...pect mounting rack and hardware for integrity a Verify the racks fasteners and support structure are in good condition and securely fastened b Inspect for signs of corrosion c For composite aircraft inspect any aluminum foil tape used to ground the GTX and verify that it is not torn damaged or showing signs of corrosion If any of these occur then the tape must be replaced Refer to appendix B for d...

Page 46: ...ents to the harness connector assembly as well as the integrity of the individual shields and their attachment Antenna Visual Inspection During normal aircraft inspections not to exceed 12 calendar month intervals conduct a visual inspection of the transponder antennas for the following 1 Erosion cracks dents or broken antenna If these conditions are present antenna must be replaced Refer to anten...

Page 47: ...in table B 1 and verify the resistance is less than or equal to the appropriate periodic test resistance value Top metal case of GTX 330 335 345 1 if installed Top metal case of GTX 330 335 345 2 if installed GTX 33 335R 345R 1 chassis if installed GTX 33 335R 345R 2 chassis if installed 4 If the resistance is more than the periodic test resistance value in table B 1 the bond must be improved enou...

Page 48: ...ions 5 23 5 4 5 RS 232 Input Output 5 26 5 4 6 ARINC 429 Input Output 5 27 5 4 7 RS 422 Out 5 27 5 4 8 HSDB Input Output 5 28 5 1 GTX General Troubleshooting This section provides information to assist troubleshooting if problems occur after completing maintenance Refer to the GTX System Configuration Log retained in the aircraft permanent records for a list of the interfaced equipment and system ...

Page 49: ... Check for proper electrical bonding grounding of the antenna installation Corrective Action Corrective Action Corrective Action Corrective Action Ensure transponder is fully seated and mated to the connectors in the mounting rack Corrective Action Corrective Action If fault still exists contact Garmin Loss of or incorrect altitude reporting by the transponder Verify transponder select switch posi...

Page 50: ...ition source GPS is powered and receiving valid GPS position data Ensure ADS B TX is ON This option is only available if ADS B TX is configured for PILOT SET Corrective Action Corrective Action Cause Cause The internal transmit or squitter monitors have detected a failure The transponder has insufficient data to support ADS B Out transmission The transponder has failed the internal power up integr...

Page 51: ...nd that they match Cause Verify RS 232 wiring between GTN GNS and GTX Check configuration of GTX and GTN GNS TRANSPONDER 1 Transponder 1 is inoperative or connection to GTN GNS is lost TRANSPONDER 2 Transponder 2 is inoperative or connection to GTN GNS is lost If two transponders are installed ensure both units are powered on The GTN GNS cannot communicate with the transponder or the transponder i...

Page 52: ...nfiguration sum m ary correct any errors T ransponder O r 1090 A D S B O ut Failure C au se C orrective A ctio n C alibration F ailure F actory transponder calibration data invalid R eload softw are R eset config and config m odule R econfigure unit V erify transponder antenna connections and coax installaiton Inspect w iring suppression bus and connections T ransponder O r 1090 A D S B O ut F ail...

Page 53: ...ure listed on the EQF Bring GTX within operating temperature listed on the EQF Internal Temperature has exceeded limits Possible internal damage may have occured Failure Failure Cause Cause Corrective Action Corrective Action High Temperature Failure Low Temperature Failure Internal Temperature has exceeded limits possible internal damage may have occurred Bring GTX within operating temperature li...

Page 54: ... ADS B IN processing is enabled and the input data does not meet the performance specifications GPS horizontal position unavailable GPS velocity unavailable GPS time unavailable HFOM must be better than 0 5NM Pressure altitude unavailable or GPS altitude and VFOM worse than 45m Verify valid GPS antenna has clear view of the sky Position source is available properly configured and powered Verify AD...

Page 55: ...ect compatibility of transponder antenna and connections FIS B enabled and the 978 MHz receiver failed Inspect compatibility of transponder antenna and connections Reload software Fault Cause Corrective Action Fault Cause Corrective Action ADS B In Configuration Fault ADS B In configuration data did not load or is invalid Service Soon Fault Cause Corrective Action ADS B In Electrical Fault ADS B I...

Page 56: ...Action Audio ROM Fault Non volatile Memory Fault Audio database did not load or is invalid Non volatile data did not load or is invalid Service Soon Service Soon Fault Fault Cause Cause Corrective Action Corrective Action Service Soon Suppression Bus Fault Fault on the suppression bus Check for incompatible LRU on suppression line DME Verify suppression bus wiring for shorts or opens Fault Cause C...

Page 57: ...In 10 ALTITUDE B4 ALTITUDE B4 In 11 ALTITUDE D4 ALTITUDE D4 In 12 EXTERNAL IDENT SELECT EXTERNAL IDENT SELECT In 13 EXTERNAL STANDBY SELECT EXTERNAL STANDBY SELECT In 14 NOT USED 28 V LIGHTING BUS HI In 15 AUDIO OUT HI AUDIO OUT HI Out 16 AUDIO OUT LO AUDIO OUT LO Out 17 SQUAT SWITCH IN SQUAT SWITCH IN In 18 RESERVED RESERVED 19 ALTITUDE ALERT ANNUNCIATE ALTITUDE ALERT ANNUNCIATE Out 20 RESERVED R...

Page 58: ...T 1 A ARINC 429 OUT 1 A Out 38 RESERVED RESERVED 39 RESERVED RESERVED 40 SPARE SPARE 41 CURRENT TEMPERATURE PROBE OUT CURRENT TEMPERATURE PROBE OUT Out 42 AIRCRAFT POWER 1 AIRCRAFT POWER 1 In 43 POWER GROUND POWER GROUND 44 CURRENT TEMPERATURE PROBE IN CURRENT TEMPERATURE PROBE IN In 45 NOT USED 14 V 5 V LIGHTING BUS HI In 46 TIS CONNECT SELECT TIS CONNECT SELECT In 47 AUDIO MUTE SELECT AUDIO MUTE...

Page 59: ...33 VDC Table 5 2 GTX 33X Encoded Altitude Pin Assignments 58 SIGNAL GROUND RESERVED 59 NOT USED SPARE 60 AIRCRAFT POWER 2 AIRCRAFT POWER 2 In 61 NOT USED SPARE 62 SWITCHED POWER OUT SWITCHED POWER OUT Out Pin Name Pin Number I O Unit 33X ALTITUDE D4 11 In Both ALTITUDE A1 2 In Both ALTITUDE A2 4 In Both ALTITUDE A4 5 In Both ALTITUDE B1 7 In Both ALTITUDE B2 9 In Both ALTITUDE B4 10 In Both ALTITU...

Page 60: ...tance to ground is 375 Ω This output is considered inactive if the voltage to ground is 11 33 Vdc Pin Name Pin Number I O Unit 33X Connector AVIONICS MASTER ON SELECT 1 In 330 Only P3301 EXTERNAL IDENT SELECT 12 In Both P3301 EXTERNAL STANDBY SELECT 13 In Both P3301 SQUAT SWITCH IN 17 In Both P3301 TIS CONNECT SELECT 46 In Both P3301 AUDIO MUTE SELECT 47 In Both P3301 INACTIVE 10 Vin 33 VDC or Rin...

Page 61: ... Pin Number I O Unit 33X ARINC 429 OUT 1A 37 Out Both ARINC 429 OUT 1B 34 Out Both ARINC 429 IN 1A 32 In Both ARINC 429 IN 1B 35 In Both ARINC 429 IN 2A 33 In Both ARINC 429 IN 2B 36 In Both ARINC 429 OUT 2A 30 Out Both ARINC 429 OUT 2B 28 Out Both ARINC 429 IN 3A 26 In Both ARINC 429 IN 3B 29 In Both ARINC 429 IN 4A 48 In Both ARINC 429 IN 4B 49 In Both ...

Page 62: ... OUT 2 Out 9 RS 232 OUT 1 Out 10 ALITTUDE A1 In 11 ALTITUDE B1 In 12 ALTITUDE C1 In 13 ALTITUDE D4 In 14 EXTERNAL STANDBY SELECT In 15 CONFIGURABLE DISCRETE 1 In Out 16 CONFIGURABLE DISCRETE 2 In Out 17 XPDR FAIL 1 Out 18 EXTERNAL SUPPRESSION In Out 19 LIGHTING BUS HI In 20 AIRCRAFT GROUND In 21 AIRCRAFT POWER 1 In 22 ALT ENCODER CONFIG MODULE DATA In Out 23 ALT ENCODER CONFIG MODULE GND In 24 USB...

Page 63: ... In 36 EXTERNAL IDENT SELECT In 37 AUDIO INHIBIT 2 In 38 POWER CONTROL In 39 SWITCHED POWER OUT Out 40 LIGHTING BUS LO In 41 AIRCRAFT GROUND 42 AIRCRAFT POWER 1 43 ALT ENCODER CONFIG MODULE POWER 44 USB VBUS POWER In Out 45 USB GND 46 AUDIO OUT HI Out 47 AUDIO OUT LO Out 48 ARINC 429 IN 2A In 49 ARINC 429 IN 2B In 50 RS 232 GND 3 51 RS 232 GND 2 52 RS 232 GND 1 53 ALTITUDE A4 In 54 ALTITUDE B4 In ...

Page 64: ... 2 62 AIRCRAFT POWER 2 Pin GTX 345 345R Pin Name I O 1 ETHERNET OUT 1B Out 2 ETHERNET IN 1B In 3 ETHERNET OUT 2B Out 4 ETHERNET IN 2B In 5 RS 232 OUT 4 Out 6 ETHERNET OUT 1A Out 7 ETHERNET IN 1A In 8 ETHERNET OUT 2A Out 9 ETHERNET IN 2A In 10 RS 232 IN 4 In 11 RS 422 A Out 12 RS 422 B Out 13 CONFIGURABLE DISCRETE 11 In Out 14 CONFIGURABLE DISCRETE 12 In Out 15 RS 232 GND 4 Pin GTX 3X5 Pin Name I O...

Page 65: ...n the configuration menu then the Gillham code altitude pins can be used for other discrete input functions If the Gillham input is enabled these pins will not be available for selection on other discrete inputs in the configuration menu Table 5 8 GTX 3X5 3X5R Encoded Altitude Pin Assignments Pin Name Pin Number I O Connector ALTITUDE D4 13 In J3251 ALTITUDE A1 10 In J3251 ALTITUDE A2 32 In J3251 ...

Page 66: ...T X Out All J3251 J3252 EQUIPMENT STATUS X Out All J3251 J3252 TRAFFIC ALERT X Out 345 345R J3251 J3252 TRAFFIC STANDBY X Out 345 345R J3251 TRAFFIC TEST X Out 345 345R J3251 TCAD SENSITIVITY X Out 345 345R J3251 J3252 INACTIVE 10 Vin 33 VDC or Rin 100 kΩ Open ACTIVE Vin 1 9 VDC with 75 uA sink current or Rin 375 Ω GND Sink current is internally limited to 200 uA max for a grounded input X Denotes...

Page 67: ... 335R 345R Connector TIS A SELECT X In 335 335R J3251 ALTITUDE SOURCE X In All J3251 J3252 AUDIO INHIBIT 1 X In All J3251 J3252 AUDIO INHIBIT 2 37 In All J3251 AIR DATA SOURCE 58 In All J3251 SQUAT 57 In All J3251 IDENT 36 In All J3251 STANDBY 14 In All J3251 INSTALL ID SELECT 13 In All J3251 EXTERNAL SUPPRESSION I O 18 In Out All J3251 INACTIVE 10 Vin 33 VDC or Rin 100 kΩ Open ACTIVE Vin 1 9 VDC ...

Page 68: ... J3251 EXTERNAL STANDBY 14 In All J3251 EXTERNAL SUPPRESSION I O 18 In Out All J3251 CONFIGURABLE DISCRETE 1 15 In Out All J3251 CONFIGURABLE DISCRETE 2 16 In Out All J3251 CONFIGURABLE DISCRETE 11 13 In Out 345 345R J3252 CONFIGURABLE DISCRETE 12 14 In Out 345 345R J3252 Pin Name Pin Number I O Unit 335 345 335R 345R Connector RS 232 OUT 1 9 Out All J3251 RS 232 IN 1 31 In All J3251 RS 232 OUT 2 ...

Page 69: ...1 ARINC 429 OUT 1A 5 Out All J3251 ARINC 429 OUT 1B 6 Out All J3251 ARINC 429 IN 2A 48 In All J3251 ARINC 429 IN 2B 49 In All J3251 Pin Name Pin Number I O Unit 335 345 335R 345R Connector RS 422 A 11 Out 345 345R J3252 RS 422 B 12 Out 345 345R J3252 Pin Name Pin Number I O Unit 335 345 335R 345R Connector ETHERNET OUT 1A 6 Out 345 345R J3252 ETHERNET IN 1A 7 In 345 345R J3252 ETHERNET OUT 1B 1 Ou...

Page 70: ...raight out of the rack Reinstallation CAUTION Do not over tighten the unit in the rack Torque exceeding 15 in lbs can damage the locking mechanism NOTE It may be necessary to insert the hex drive tool into the access hole and turn the cam mechanism 90 counterclockwise to ensure correct position prior to placing the unit in the rack 1 Slide the GTX 330 330D straight in the rack until it stops about...

Page 71: ...ector Assembly 211 60234 08 2 PLACES 115 00294 00 330 00053 01 BNC OR 330 00053 02 TNC 1 OR 2 PLACES 211 63234 12 2 PLACES NUT SUPPLIED WITH 330 00053 XX 212 00022 00 1 OR 2 PLACES 125 00002 00 125 00056 00 211 60234 12 2 PLACES 330 00185 62 CONTAINS 336 00021 00 330 00220 37 330 00228 20 CONTAINS 336 00029 00 ...

Page 72: ...s screw on the handle 3 Pull the handle upward to unlock the GTX 33 33D Gently remove the unit from the rack Reinstallation 1 Visually inspect the connectors to verify there are not bent or damaged pins Repair any damage 2 Gently insert the GTX 33 33D into its rack The handle should engage the locking mechanism used to secure the unit in place 3 Press down on the GTX 33 33D handle to lock the unit...

Page 73: ... 6 2 Standard G1000 Mount Back Plate Hardware Description P N Qty Connector hi dense D sub mil crimp 62 ckt 330 00185 62 1 Sub assembly backshell with hardware 37 62 pin 011 00950 03 1 Sub assembly ground adapter shell 4 5 011 01169 01 1 Screw 4 40 x 250 FLHP 100 SS P nylon 211 63234 06 2 ea connector Connector hi dense D sub mil crimp 15 ckt 330 00185 15 1 Sub assembly backshell with hardware 9 1...

Page 74: ...y P N 011 02976 00 Figure 6 5 GTX 3X5 with GPS Back Plate Assembly P N 011 02976 01 Refer to table 6 3 for the list of back plate items for the vertical mounting assembly Refer to figure 6 6 figure 6 7 and figure 6 8 for the back plate assemblies 3 1 2 NUT SUPPLIED WITH ITEM 2 5 4 1 2 4 3 2 NUTS SUPPLIED WITH ITEMS 2 4 5 4 ...

Page 75: ...escription P N Qty 1 DCP connector plate remote GTX 3X5 w secondaries 125 00343 10 1 2 Connector male female special BNC 330 00053 01 1 3 Washer shoulder GNC 400 212 00022 00 2 4 Connector male female special BNC TNC 330 00053 02 1 7 Washer centering no float 212 00022 10 1 8 Washer split lock size 8 212 00018 04 2 9 Screw captive 8 32 62 3 832 hex drv 211 00290 00 2 1 2 7 NUT SUPPLIED WITH ITEM 2...

Page 76: ... 6 Page 6 7 Figure 6 7 GTX 3X5 Vertical Mount with GPS Back Plate Assembly P N 011 02976 11 Figure 6 8 GTX 3X5 Vertical Mount with TNC XPDR Back Plate Assembly P N 011 02976 12 2 1 7 3 4 NUTS SUPPLIED WITH ITEMS 2 4 8 2 9 2 4 1 7 NUT SUPPLIED WITH ITEM 4 9 2 8 2 ...

Page 77: ... locking mechanism NOTE It may be necessary to insert the hex drive tool into the access hole and rotate the cam mechanism 90 counterclockwise to ensure correct position prior to placing the unit in the rack 1 Slide the GTX 3X5 straight in the rack until it stops about one inch short of the final position 2 Insert a 3 32 inch hex drive tool into the access hole at the bottom of the unit face 3 Tur...

Page 78: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 6 9 Figure 6 9 GTX 3X5 Mounting Rack Connector Assembly 81 7 5 3 7 81 7 167 5 3 7 66 0 211 725 7 21 02 8 ...

Page 79: ...ure not to over tighten the unit into the rack Torque exceeding 8 in lbs can damage the locking mechanism NOTE It may be necessary to insert the hex drive tool into the access hole and rotate the cam mechanism 90 counterclockwise to ensure correct position prior to placing the unit in the rack 1 Visually inspect the connectors and pins to ensure they are not bent or damaged Repair any damage 2 Sli...

Page 80: ...nual Rev 6 Page 6 11 Figure 6 10 GTX 3X5R Standard Mounting Rack Connector Assembly Figure 6 11 GTX 3X5R G1000 Mounting Rack Connector Assembly 81 7 5 3 7 81 7 167 5 3 7 66 0 211 725 7 21 02 8 81 7 167 5 187 3 7 7 326 127 6 2 1 3 7 66 0 211 725 7 21 02 8 ...

Page 81: ...er body using a 3 32 hex tool 3 Carefully remove the back plate and connector assembly from the unit 4 While pulling turn the large knob at the base of the unit counterclockwise until it can be pulled off the tab at the base of the unit 5 Slide the unit forward and up until it clears the base plate Installation 1 Tilt the unit so that the toe of the GTX 3X5 shoe fully engages the base plate 2 Ensu...

Page 82: ...ADS B Maintenance Manual Rev 6 Page 6 13 Figure 6 12 GTX 3X5R Vertical Mounting Rack Connector Assembly UNIT 011 03303 40 INSTALL RACK 011 03762 00 BACK PLATE ASSEMBLY 011 02976 11 CONNECTOR KIT 011 02977 01 CONFIG MODULE 011 00979 03 ...

Page 83: ...med in accordance with section 9 Removal 1 Remove the transponder Refer to section 6 3 for details 2 Remove the static line attached to the altitude encoder 3 Disconnect wiring harness at the altitude encoder 4 Remove two screws securing the unit to the back plate Reinstallation 1 Secure altitude encoder to back plate assembly with two screws torque to 8 in lbs 2 Connect wiring harness to altitude...

Page 84: ...na The transponder antenna s are not installed by this STC Refer to the antenna manufacturer s maintenance information for removal and reinstallation instructions Description P N Qty Sub assembly altitude encoder unit only 011 03080 01 1 Screw 4 40 x 250 PHP SS P w nyl 211 60234 08 2 Screw 4 40 x 312 FLHP 100 SS P nyl 211 63234 09 2 Harness 4 cond Garmin altitude encoder 325 00421 00 1 GARMIN ALTI...

Page 85: ...r GTX 33X software versions are non compliant with ADS B Out Version 2 requirements If the software version and or part number does not match those specified or if the software is not successfully loaded DO NOT continue Troubleshoot and resolve the issue before continuing NOTE Screen shots in this section are provided for reference only For approved GTX software versions refer to GTX 33X and GTX 3...

Page 86: ...al Rev 6 Page 7 2 3 Press either the 8 key or the 9 key until you see the SYS software version screen 4 Verify the version number matches the approved version listed in the Equipment List Refer to figure 7 2 for details Figure 7 2 GTX 330 Product Data Page ...

Page 87: ...ve the start up screen until you see PRESS ENT FOR PRODUCT DATA Refer to figure 7 3 for details Figure 7 3 GTX 3X5 Start Up Screen 3 Press the ENT key to navigate to the software version screen 4 Verify the version number matches the approved version listed in the Equipment List Refer to figure 7 4 for details Figure 7 4 GTX 3X5 Product Data Page ...

Page 88: ... of the GTX 33 33D 3X5R when interfaced with the GTN 6XX 7XX Refer to GTN 6XX 7XX Part 23 AML STC Installation Manual for additional details 1 On the GTN 6XX 7XX System Page touch the External LRUs key 2 Observe the reported GTX software version number Refer to figure 7 5 for details 3 Verify the version number matches the approved version listed in the Equipment List Figure 7 5 GTN 6XX 7XX System...

Page 89: ...aced with the GX000 Refer to the applicable G1000 Series Pilot Guides or Installation Manual for additional details 1 On the GX000 PFD enter the configuration option 2 On the System Status page scroll to the GTX LRU 3 Observe the reported GTX software version number Refer to figure 7 6 for details 4 Verify the version number matches the approved version listed in the Equipment List Figure 7 6 GX00...

Page 90: ...can be updated in Configuration mode as well as in Test mode Updating software in Configuration mode does not require the TEST MODE SELECT switch However the TEST MODE SELECT switch is required for the GTX 33 series Refer to figure 7 7 for software update connections Figure 7 7 Software Update Connection P3301 GARMIN GTX 330 33 AIRCRAFT POWER 21 AIRCRAFT POWER 42 TEST MODE SELECT 18 GROUND 27 GROU...

Page 91: ...are received or not Failure to connect a dummy load or antenna during this procedure will cause the transponder to fail and possibly damage the unit 1 Remove power from the GTX 2 Connect the test harness to the GTX and laptop Refer to figure 7 7 for details 3 Enable the TEST MODE switch on the test harness 4 Power on the GTX 5 Double click on the file UPLOADXX BAT XX is an incremental number assig...

Page 92: ...TX 3X5 Install Tool Manual P N 190 01499 30 from the Dealer Resource Center Software may be loaded by performing the following steps on the Software Upload page 1 Download the latest GTX 3X5 3X5R software from the Garmin Dealer Resource Center 2 Under Step 1 Select a File select the Browse key and locate the Boot Block software file containing the GTX 3X5 3X5R software previously downloaded 3 Unde...

Page 93: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 7 9 Figure 7 8 GTX 3X5 Install Tool Software Upload Page ...

Page 94: ...and functioning correctly The steps that are not applicable to a particular installation may be skipped 8 2 System Checkout Original GTX is Reinstalled If the original GTX is reinstalled configuration and software loading are not required Continue to GTX Test section 8 5 New Repaired or Exchanged GTX is Installed If a new repaired or exchanged GTX is installed the AML approved software refer to se...

Page 95: ...ess the GTX configuration page from the GND Maintenance mode display of the GNS 480 This page will allow the remote transponder to be configured Refer to the Equipment Setup and Configuration section of GNS 480 CNX80 Color GPS NAV COM Installation Manual for detailed instructions 8 4 GTX 3X5 Configuration Retrieve the Post Installation Checkout log from the aircraft permanent records For the maint...

Page 96: ...remove the GTX from Ground Test mode 8 5 1 GTX 33 330 Airborne Mode v8 02 or higher The transponder must be placed in an airborne state to reply to any Mode A or Mode C interrogations The GTX uses advanced Air Ground logic to determine the state of the transponder This logic must be temporarily defeated in order to place the transponder in an airborne state for testing To place the transponder int...

Page 97: ...st mode located on the state page Remote Mounted Transponder GTX 3X5R G1000 G950 Interface 1 Connect the GTX 3X5 installation tool to the GTX 3X5R unit 2 Place unit into ground test mode located on the state page Remote Mounted Transponder GTX 3X5R G1000 G950 Interface w GDU sw v15 00 and higher The following is a method of placing a GTX 3X5 in an airborne state while on the ground without the use...

Page 98: ...amp tester refer to the manufacturer s documentation NOTE Software version 5 30 or later is required on the TR 220 1 Ensure the aircraft is in a location where a GPS signal can be received e g outdoors with a clear view of the sky 2 Power on the aircraft avionics and ensure that the GTX is powered on 3 If the GTX is configured for pilot control of the ADS B transmitter ensure ADS B TX is selected ...

Page 99: ...eration and surveillance functions correctly 1 Set the aircraft altimeter to 29 92 to find the local pressure altitude 2 Connect the GTX 3X5R unit to the GTX 3X5 Installation Tool 3 Set the TCAS ramp tester to the scenario in table 8 1 Table 8 1 Ramp Test Pressure Altitude Check Scenario 4 Select the TCAS Operate key on the GTX 3X5 Install Tool State page to put the TCAS system into Operate mode 5...

Page 100: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 8 7 ...

Page 101: ...190 00734 11 GTX 33X and GTX 3X5 ADS B Maintenance Manual Rev 6 Page 8 8 ...

Page 102: ... 1 Maintenance Records After conducting the required return to service procedures in accordance with this document the aircraft may be returned to service Record the following information in appropriate aircraft maintenance logs Part number and version number of any software updates performed during maintenance Part number and serial number of any LRU which was replaced Any other applicable inform...

Page 103: ...tenance Manual Rev 6 Page A 1 APPENDIX A INSTALLATION SPECIFIC INFORMATION An electronic fillable form is available Acrobat Reader 8 0 or later is necessary to view and fill out the form You can download Acrobat Reader by visiting www adobe com ...

Page 104: ...00734 11 Rev 6 Page A 2 GENE AIRCRAFT SPECIFIC INFORMATION RAL INFORMATION Date By AIRCRAFT AIRCRAFT MAKE AIRCRAFT MODEL AIRCRAFT SERIAL AIRCRAFT REG HEX ADDRESS GTX 1 Unit P N Mod Level Unit Model Serial GTX 2 N A Unit P N Mod Level Unit Model Serial ...

Page 105: ...34 11 Rev 6 Page A 3 ELECTRICAL LOAD ANALYSIS ITEMS REMOVED FROM AIRCRAFT ELECTRICAL LOAD A 1 COMMENT Subtotal ITEMS ADDED TO AIRCRAFT ELECTRICAL LOAD A 1 COMMENT Subtotal Net Change in Bus Load 1 Use typical current draw when performing this calculation ...

Page 106: ...PS 1 Model GTX Port Number GPS 2 Model GTX Port Number Heading Model GTX Port Number Air Data Model GTX Port Number Model s Write in the model number or numbers of the equipment which is interfaced to the GTX GTX Port Numbers When applicable write in the GTX port number or numbers used for the interface This column is generally applicable only to serial ports such as RS 232 and ARINC 429 NOTE This...

Page 107: ...ACED EQUIPMENT Audio Panel Model GTX Port Number Display Model GTX Port Number Altitude Encoder Model GTX Port Number GPS 1 Model GTX Port Number GPS 2 Model GTX Port Number Heading Model GTX Port Number Air Data Model GTX Port Number 7UDIILF Model GTX Port Number Model GTX Port Number ...

Page 108: ...nance Manual 190 00734 11 Rev 6 Page A 6 Wire Routing Single Engine The following diagram depicts approximate location of all LRUs along with the wire routing for the GTX throughout the aircraft structure for a single engine aircraft ...

Page 109: ... B Maintenance Manual 190 00734 11 Rev 6 Page A 7 Twin Engine The following diagram depicts approximate location of all LRUs along with the wire routing for the GTX throughout the aircraft structure for a twin engine aircraft ...

Page 110: ...____________________ Speed ____________________ Output ____________________ Speed ____________________ Port 2 Input ____________________ Speed ____________________ Output ____________________ Speed ____________________ Port 3 Input ____________________ Speed ____________________ Port 4 Input ____________________ Speed ____________________ Transponder 2 Port 1 Input ____________________ Speed _____...

Page 111: ...__________________ Only available for GTX 345 345R Only available for GTX 345 345R Port 4 Input ____________________ Port 4 Input ___________________ Output ____________________ Output ___________________ ARINC 429 CONFIGURATION Transponder 1 Port 1 Input ____________________ Speed ____________________ Output ____________________ Speed ____________________ Port 2 Input ____________________ Speed _...

Page 112: ...LECT TRANSPONDER FAIL 1 ALTITUDE DATA SELECT EXTERNAL SUPRESSION I O AUDIO INHIBIT 1 REPLY ACTIVE AUDIO INHIBIT 2 TRANSPONDER FAIL 2 AIR DATA SELECT ALTITUDE ALERT ANNUNCIATE SQUAT SWITCH ADS B FUNCTION FAILURE EXTERNAL IDENT SELECT TRAFFIC ALERT EXTERNAL STANDBY SELECT TRAFFIC STANDBY OPERATE EXTERNAL SUPRESSION I O TRAFFIC TEST ...

Page 113: ...tting Message Altitude Monitor Setting Setting Count Down Timer Page Change Setting Setting Traffic Messages Display Mode Level Setting Setting BKLT Source KEY Setting Setting If MAN selected as BKLT Source the If MAN selected as KEY Source the additional fields below must be configured additional fields below must be configured Level Level Setting Setting Min Min Setting Setting BKLT Source KEY S...

Page 114: ...uto Flight Timer Setting GPS X Ofst Setting GPS Integrity Setting Max A S Setting AC Width Type Format Setting Altitude Alert Deviation Setting Temperature Sensor Installed Units Setting US Tail Setting Hex Address Setting Mode S Flight ID Setting 2 3 27 72 7 7 6HWWLQJ GPS Y Ofst Setting Aircraft Type Setting AC Length Type Setting ADS B 7 Setting Setting 1090 IN UAT IN Setting Setting EHS Gray Co...

Page 115: ...Auto Flight Timer Setting GPS X Ofst Setting GPS Integrity Setting Max A S Setting AC Width Type Format Setting Altitude Alert Deviation Setting Temperature Sensor Installed Units Setting US Tail Setting Hex Address Setting Mode S Flight ID Setting 2 3 27 72 7 7 6HWWLQJ GPS Y Ofst Setting Aircraft Type Setting AC Length Type Setting ADS B 7 Setting Setting 1090 IN UAT IN Setting Setting EHS Gray C...

Page 116: ...ude Climb Rate for Airborne Transition Enhanced Surveillance Setting Setting Air Ground Logic Surveillance Integrity Level Setting Setting IE 7 Squat Switch Sense Temperature Switch Installed Setting Setting Max Airspeed 1090 Input Setting Setting Address Type UAT Input Setting Setting Address GPS Antenna Longitudinal Offset Setting Setting Flight ID Type GPS Antenna Lateral Offset Setting Setting...

Page 117: ...___________ Offset ______________________________ Default Backlight Offset ___________________ Default Contrast Offset ____________________ SNSR OAT Sensor Installed _____________________ Altitude Source 1 ________________________ Altitude Source 2 ________________________ GPS 1 SRC _____________________________ GPS 2 SRC _____________________________ INTGRTY __________________________ INTGRTY ___...

Page 118: ..._________________ Default Contrast Offset ____________________ SNSR OAT Sensor Installed _____________________ Altitude Source 1 ________________________ Altitude Source 2 ________________________ GPS 1 SRC _____________________________ GPS 2 SRC _____________________________ INTGRTY __________________________ INTGRTY ___________________________ LAT OFST _________________________ LAT OFST ________...

Page 119: ...Rev 6 Page A 17 AIRCRAFT WIRING DIAGRAMS Attach the aircraft wiring diagrams showing the equipment installed by this STC or a markup of the interconnect diagrams from the STC installation manual detailing which equipment was installed and how it was connected ...

Page 120: ... untreated or bare dissimilar metals Materials should be galvanically compatible When corrosion protection is removed to make an electrical bond any exposed area after the bond is completed should be protected again Additional guidance can be found in AC 43 13 1B and SAE ARP1870 Typical electrical bonding preparation examples are shown in figure B 1 figure B 2 and figure B 3 Figure B 1 Electrical ...

Page 121: ...5 0 G115C G115C2 G115D G115D2 G115EG Instrument panel 50 0 25 0 2 G120A Instrument panel 50 0 25 0 2 Ruschmeyer R90 230RG Instrument Panel 50 0 25 0 2 Slingsby Aviation T67M260 Instrument Panel 50 0 25 0 2 Triton A500 Instrument panel 50 0 25 0 2 Composite IFR Models Beech 390 Nearby structure lightning ground foil 10 0 5 0 Cessna LC40 550FG LC41 550FG LC42 550FG Nearby aluminum lightning ground b...

Page 122: ...ting IFR operation 2 IFR models must use values of 10 0 and 5 0 for bonding tests and use aircraft lightning ground per the aircraft SRM or other manufacturer approved data as ground reference instead of the instrument panel Triton A500 Local grounded structure 10 0 5 0 Aircraft Type Model Ground Reference Maximum Resistance Between GTX Chassis and Ground Reference mΩ Notes Periodic Reconditioned ...

Page 123: ...e Aircraft Use the following guidance when repairing or replacing special bonding components Use aluminum tape 3M P N 436 438 or other adhesive backed dead soft aluminum foil with minimum 7 2 mils metal thickness when replacing existing aluminum foil that has been damaged A tape maximum length to width ratio of 7 1 must be maintained i e up to seven inches in length for every one inch in width Mai...

Page 124: ...minum plate used to protect the aluminum tape from the fasteners 5 Secure the end of the tape to the composite surface with the existing aluminum plate as shown in figure B 6 6 If any of the existing special bonding components are found to be damaged use the braid and hardware specified in table B 2 to replace the damaged items refer to figure B 6 and figure B 7 7 If multiple strips of tape were u...

Page 125: ... Item Number Description 1 Tinned copper flat braid 3 4 QQB575F36T781 OR Tinned copper tubular braid 7 16 inch QQB575R30T437 2 Terminal lug 5 16 inch uninsulated MS20659 131 3 Bolt 5 16 inch AN5 XA 4 Lock washer 5 16 inch NASM35338 45 5 Flat washer 5 16 inch NAS1149F0563P 6 Flat washer 0 063 inch thick NASM970 5 AN970 5 7 Locknut 5 16 inch AN363 535 ...

Page 126: ...ALUMINUM TAPE 0 063 ALUMINUM PLATE 3 BOLTS WITH LOCKNUTS AND WASHERS GROUND STUD COMMON TO INSTRUMENT PANEL BONDING STRAP REQUIRED IF SECONDARY ST BONDED TO THE INSTRUMENT PANEL RUCTURE IS NOT OTHERWISE SECONDARY STRUCTURE A A VIEW A A NOT TO SCALE 0 063 ALUMINUM PLATE SECONDARY STRUCTURE ALUMINUM TAPE 2 1 3 4 5 6 6 7 ...

Page 127: ...INUM TAPE 2 3 1 3 2 1 1 AIRCRAFT SECONDARY STRUCTURE SUCH AS AN EQUIPMENT SHELF MUST HAVE CLEARANCE ON THE OPPOSITE SIDE FOR HARDWARE NEEDED TO INSTALL THE GTX 33 33D 3X5R TO THE AIRCRAFT STRUCTURE 2 RECOMMENDED THICKNESS OF ALUMINUM PLATE IS 0 032 ALUMINUM PLATE LENGTH AND WIDTH MUST BE AT LEAST 0 5 LARGER THAN THE GTX 33 33D FOOTPRINT MINIMUM 10 45 X 2 78 FOR SINGLE BONDING PLATE OR 1 75 X 3 11 ...

Page 128: ...clamp and the metallic tube over an area which is equal to the width of the clamp and 1 inch minimum length for steel tubes 2 inch minimum length for attachment to aluminum tubes to ensure a good contact surface 2 Reinstall the existing bonding straps from the GTX mounting plate to the bonding clamp 3 Verify the resistance between the GTX chassis and the aircraft ground structure does not exceed 2...

Page 129: ...ual Rev 6 Page B 10 Table B 3 Tube and Fabric Airframe Bonding Hardware Refer to figure B 8 Conductive Clamp Assembly 1 Bonding clamp AN742 XX Dash number determined by tube diameter 2 Bolt 10 AN3 XA 3 Flat washer NASM970 3 AN970 3 4 Locknut 10 AN363 1032 ...

Page 130: ...AND NUTS IDENTIFIED IN TABLE 2 IF USING AN742 6 THROUGH AN742 10 CLAMPS TWO BONDING CLAMP ASSEMBLIES MUST BE USED IF USING AN742 11 OR LARGER CLAMPS ONLY ONE BONDING CLAMP ASSEMBLY IS REQUIRED 3 INSTALL BONDING CLAMP UNDER FABRICATED METAL PLATE ENSURE MAXIMUM CONTACT AREA BETWEEN CLAMP AND FABRICATED METAL PLATE FOLLOW GUIDANCE IN SECTION B 1 FOR ELECTRICAL BONDING AND REFERENCE FIGURE B 2 FOR EL...

Page 131: ...ding strap by securely attaching 5 16 inch inside diameter terminal lugs to each end of the overbraid 2 Ensure all surface preparation material e g primer paint etc is removed between the large diameter flat washer item 6 under the terminal lug and metallic surface on the aircraft instrument panel and aircraft metallic structure or aircraft ground 3 After assembly and bonding check prime the airfr...

Page 132: ...d copper flat braid 3 4 inch QQB575F36T781 OR Tinned copper tubular braid 7 16 QQB575R30T437 2 Terminal lug 5 16 inch uninsulated MS20659 131 3 Bolt 5 16 inch AN5 XA 4 Lock washer 5 16 inch NASM35338 45 5 Flat washer 5 16 inch NAS1149F0563P 6 Flat washer 0 063 inch thick NASM970 5 AN970 5 7 Locknut 5 16 inch AN363 524 INSTRUMENT PANEL OR AIRFRAME GROUND REF 1 2 3 4 5 6 6 7 ...

Page 133: ......

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