(2016) Service Bulletin 1653 Rev A: GTX 3X5(R) Series Software Upgrade to Main Software Version 2.05 and ADS-B Software Version 2.05

PRODUCTS AFFECTED:
 All GTX 3X5(R) series products – interfaced to a 3rd-party transponder controller, interfaced to an external AHRS, or installed in rotorcraft – are affected.

CERTIFICATION AUTHORIZATION:
 TSO

COMPLIANCE:
 Optional

PURPOSE:
 GTX 3X5(R) Series main software version 2.05 includes the following changes:

• Fixed issues with GPS altitude used for rotorcraft air/ground logic
• Field enabled feature for 3rd party transponder control
• Fixed bugs in TIS-A functionality
• Added configuration setting to allow the message alert (MSG) to not flash if desired
• Removed extraneous alerts for GPS Fault and GPS Keep Alive

 GTX 3X5(R) Series ADS-B software version 2.05 includes the following changes:

• Improved update rate of external AHRS output over Bluetooth
• Added Optimized Legacy ADS-B format for 3rd party displays