Garmin GDL 90 units are affected.
Effective 12/31/19, repair services and service parts are discontinued for the GDL 90.
We sincerely regret discontinuing service or support on any Garmin product. However, a number of components required for the manufacture and/or repair of essential sub-assemblies within the affected products are no longer available.
Please visit www.Garmin.com/aviation for your product replacement needs.