Gulfstream IV / G350 / G450
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 90; Flight Crew Total 5570; Flight Crew Type 600
Confusion; Situational Awareness
Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Flight Crew Took Evasive Action
Human Factors; Aircraft; Procedure
We were clear for a visual approach; left traffic for Runway XX. The controller asked us to report abeam the tower; after that he asked us to report on final. When we reported on final approach; he asked us to keep minimum approach speed due traffic on right base for Runway XX with intentions of a touch and go maneuver. Then the Controller cleared us to land number 2 after the traffic turning on to final. We asked the Controller for traffic position since we did not have it insight; he asked us to continue and informed us the traffic was in short final and we were cleared as number 2. We saw the traffic flying over the runway threshold when we were about half a mile from the threshold and we decided to go-around since a collision was imminent. After that we were instructed to make a right traffic for Runway XX and were cleared to land. The Air Traffic Controller asked FBO's CSR to lets us know he wanted to talk to the crew after we parked. We called him and he apologized for the bad decision he made of having a low approach speed aircraft in front of high approach speed aircraft without enough separation.I think there was a lack of information from the controller to us flying the Gulfstream of the Cherokee real position in front of us; Poor decision making of the controller having those traffics that close on an approach at night on a short runway; not proper lightning installation on the Cherokee. The airspace was not busy; the controller knew about our arrival and position well in advance and cleared us for an approach that was obstructed with a last minute traffic without enough room to execute its maneuver and clear the pattern.
Pilot reported a go-around due to traffic they were following was too close to land safely behind.