(2019) Service Bulletin 1982 Rev A: GPS 175/GNX 375/GNC 355 Main Software Version 3.03

PRODUCTS AFFECTED:

All GNX 375 products listed below with Main Software Version 3.02 and earlier are affected. All GPS 175 and GNC 355 products interfaced to ADS-B In systems (e.g. GTX 345 and GDL 88) listed below with Main Software version 3.02 and earlier are also affected.

Model Appliance — P/N
GPS 175 — 011-04377-00
GNX 375 — 011-04378-00
GNC 355 — 011-04956-00
GNC 355A — 011-04956-30

CERTIFICATION AUTHORIZATION:

TSO Authorization

COMPLIANCE:

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

PURPOSE:

GPS 175/GNX 375/GNC 355 Main Software Version 3.03 contains the following changes:

• (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.