GDL 84/88 units listed in the table below are affected.
|011-02370-00||GDL 88 w/WAAS|
|011-02372-00||GDL 88D w/WAAS|
|011-02370-10||GDL 88H w/WAAS|
|011-02372-10||GDL 88DH w/WAAS|
|011-03727-00||GDL 84 w/WAAS|
|011-03728-00||GDL 84H w/WAAS|
Recommended: Garmin recommends the incorporation of this Service Bulletin at the next scheduled service interval.
GDL 84/88 System Software Version 3.42 provides the following:
- fixes an issue where some ADS-B traffic intruders may not be displayed when over 200 ADS-B intruders are within range
Active TCAS surveillance is not affected by this issue.
- provides FIS-B processing improvements
WAAS Software Version 5.3 (if applicable) fixes a GPS date problem beginning August 16, 2020. The GDL 84/88 may report an incorrect GPS date if the GPS receiver has not acquired a 3D navigation solution within the last 128 weeks.