EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Distraction; Human-Machine Interface; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach; General Flight Cancelled / Delayed
Aircraft; Human Factors; Company Policy
Upon arrival after setup and verification of the GPS we were on vectors for the approach. After being cleared for the approach and reaching the final approach fix; my GPS lost both the FPA and lateral guidance. I called out the loss of GPS guidance and the Captain called for a go-around even though his GPS continued to operate properly. We executed the missed approach; set the approach back up; ran our checklist and transferred controls. We also noted the presence of the FMS message SBAS 2 NOT NAV on the right side FMS. The Captain flew the next GPS Approach and landed the aircraft with no further incident.
EMB-145 First Officer reported the Captain called for a go-around after the First Officer lost GPS guidance signal.