Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 75; Flight Crew Total 6300; Flight Crew Type 450
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Aircraft; Environment - Non Weather Related; Procedure
GPS failure with the Flight Management System caused a deviation off of course.
Small Transport Captain reported losing the GPS signal near Midway Airport.