(2023) Service Bulletin 23046 Rev A: G3X Touch™ EFIS Software Version 9.15

PRODUCTS AFFECTED:

G3X Touch systems installed using Approved Model List (AML) Supplemental Type Certificate (STC) SA01899WI are affected.

CERTIFICATION AUTHORIZATION:

STC SA01899WI MDL Revision 15

COMPLIANCE:

MANDATORY: This STC service bulletin is mandatory for Grumman American AA-5 Series airframes with a Garmin GFC 500 and Smart Glide™.

For all other installations, this STC service bulletin is recommended at the next scheduled service interval.

PURPOSE:

This STC Service Bulletin announces the approval of G3X Touch EFIS software version 9.15 which includes the following updates:

• Supports integration between a G3X PFD and GI 275 standby instrument
  

NOTE
The integrated functionality between the G3X PFD and GI 275 standby requires new wiring interfaces and configuration settings per G3X AML STC Installation Manual Rev 13 (MDL Rev 15).

• • Synchronized baro setting
    
  • Selected Altitude and Heading bugs
    
  • Nav source selection
    
  • Course selection
    
  • Baro minimums
    
  • Ability to share a single GMU 11 magnetometer and GTP 59 OAT probe between the G3X and GI 275
    
  • GI 275 monitors GSU 25D ADAHRS and provides miscompare annunciations for attitude, altitude, and airspeed
    
  • G3X PFD can revert to using GI 275 ADAHRS data in case of GSU 25D failure
    
• Improvements to Smart Glide™ functionality when paired with a GTN™ 6XX/7XX Xi navigator and GFC 500 autopilot. This update resolves the issue documented in Garmin Service Alert 22027.
  
• Remote NAV tuning on the G3X Touch displays when interfaced to a compatible Garmin VHF navigator
  
• IGRF Magnetic Field Model will be updated via the Navigation database for installations with software version 9.15 and later
  
• Supports using the Autopilot Disconnect button to disable ESP™ (press/hold AP DISC for 5 seconds) for GFC 500 equipped aircraft
  
• G3X software version 9.15 includes G5 software version 8.20
  

This STC amendment also approves installation of GDU™ 460 and GDU 470 with Mod status 3.

Additional information about the changes included in G3X Touch EFIS software version 9.15 can be found here: https://www8.garmin.com/support/download_details.jsp?id=14567

WARRANTY INFORMATION:

This software update is warranty reimbursable with a deadline of November 30, 2023 for Grumman American AA-5 Series airframes with a Garmin GFC 500 and Smart Glide only.