Human-Machine Interface; Distraction; Confusion
Aircraft Equipment Problem Less Severe
Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem
ATC Equipment / Nav Facility / Buildings; Aircraft
In cruise flight with the autopilot engaged GPS 1 and 2 displayed messages they had lost integrity and were no longer providing navigation. I immediately disengaged the autopilot and switched to VLOC navigation direct to BIL Vortac. The First Officer pulled out the Low Enroute chart to determine the nearest victor airway to navigate to. Within a few minutes both GPS units were receiving signals and were navigating accurately. I notified ATC of the issue and they acknowledged it and advised us to report any additional issues. We continued the flight and landed without incident and wrote up the aircraft.
Cessna pilots reported both of their GPS's failed temporarily.