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Aviation Alerts and Advisories

GPS 175/GNC 355/GNX 375 main software version 3.03 for Part 23 AML STC SA02636SE Part 23 Aircraft

PRODUCTS AFFECTED:

GPS 175, GNX 375, GNC 355, or GNC 355A products installed under the Part 23 AML STC SA02636SE are affected.

CERTIFICATION AUTHORIZATION:

STC SA02636SE

COMPLIANCE:

Recommended: Garmin recommends the incorporation of this service bulletin at the next scheduled service interval.

PURPOSE:

MDL revision 6 includes the following changes:

  • Added the G5 (GAD 29) as an approved altitude source for the GNX 375 to the STC.
  • Updated the GPS 175/GNC 355/GNX 375 to main software version 3.03. Changes in software version 3.03 that affect the GPS 175/GNC 355/GNX 375 are:
    • (GNX 375) Fixes an issue where some traffic targets may be missed when over 200 targets are in range
    • (GPS 175/GNX 375/GNC 355) Fixes an issue where prioritization of selected traffic over non-selected traffic was not occurring. This could result in removal of selected traffic, if 60 or more other aircraft are closer than selected traffic.
  • Clarified AFMS completion instructions.
    Clarified installation instructions for aircraft without an avionics bus.

ASDN Service Bulletin 1983 Rev A