Falcon 900
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 100; Flight Crew Total 14000; Flight Crew Type 600
Troubleshooting; Confusion
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft
After Departing UUWW for ZZZZ while cruising at FL380 approximately 200 miles NW of UUWW GPS 1 and GPS 2 both failed for about 1 minute then returned to service and then again failed for about 1 minute and again returned to service.No GPS failures occurred prior to or after this specific event. As stated both GPS units failed simultaneously. The airplane's navigational performance did not appear to be degraded by these momentary failures as the airplane is equipped with dual IRS (Internal Reference System) which were unaffected.No known atmospheric interference occurred and no known GPS satellite outages occurred. In retrospect there may have been some sort of interference associated with the GPS receivers which caused these failure messages. The actual cause is unknown.
DA50-900EX Captain reported GPS 1 and GPS 2 both failed at the same time then returned to service and then again failed and again returned to service.