190-01499-00 Rev. C
GTX 335/345 Pilot’s Guide
7-1
GTX 3X5 XPDR
1 – GTX 3X5 SERIES XPDR
7 - TROUBLESHOOTING
7 TROUBLESHOOTING
The GTX 3X5 display system sends messages to the flight crew when trouble or otherwise
abnormal conditions are detected. Table 7-1 outlines troubleshooting actions the flight
crew may take to attempt to resolve each system message. If the actions taken do not
resolve the message, or if there are any questions, the Garmin Product Support
department is available Monday through Friday, 7:00 AM to 7:00 PM Central Time.
US: 913-397-8200
US Toll Free: 1-866-739-5687
Canada Toll Free: 1-866-429-9296
www.fly.garmin.com
To expedite your call, please have the following information ready.
1. System configuration (products, antennas, mounting location, etc.)
2. Model number, part number, and serial number
3. Software version(s)
4. Description of the problem
5. Efforts made to isolate/solve the problem
7.1
Transponder Failures
The screen in figure 7-1 shows when ADS-B is not transmitting and the aircraft may not
be compliant with 14 CFR 91.225. However, the transponder is still operating. The screen
in figure 7-2 shows if both the transponder and ADS-B are not transmitting and the
aircraft may not be compliant with 14 CFR 91. 215 and 14 CFR 91.225.
Figure 7-1 ADS-B 1090 Failed Screen
Figure 7-2 ADS-B 1090 and Transponder Failed Screen
