Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Situational Awareness; Confusion
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Conflict NMAC
Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action; Flight Crew Executed Go Around / Missed Approach
Human Factors; Procedure
While crossing the final approach fix; ATC cleared us to land number two. We saw no other traffic until a Aircraft Y came out of the sun in front of us. It had been in a descending steep right turn and appeared at our altitude at about 1 o'clock. Initially; I thought it was extremely close on the order of several hundred ft. It could have been as far as 1;500 feet; but I cannot be certain. We performed a rejected landing and turned left to add space while the Aircraft Y performed a touch and go. After landing; we were instructed to turn off the runway at an intersection where an airplane was waiting to cross. After selecting a later turn off; ATC told the Aircraft Y to go-around because separation was lost. I cannot think of any errors made by our flight crew. We were on speed; altitude and in the correct aircraft state. I don't know how to avoid this type of event in the future.
Air carrier First Officer reported performing a go-around due to another aircraft unexpectedly appearing in front of them on short final.