Small Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 10
Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Inflight Event / Encounter Unstabilized Approach
Air Traffic Control Separated Traffic
Human Factors; Procedure
Aircraft X was on a visual approach to Runway 18R direct and told to keep the speed up; Aircraft Y was on a 240 HDG then vectored west for spacing to sneak the Aircraft X. They were six miles apart and Aircraft Y was cleared for the ILS 18R and told to reduce to final approach speed to follow. Looking up at the airport ground traffic monitor; there was nobody departing for Runway 18L. As Aircraft Y got closer he called traffic in sight and I told him to follow; re-cleared Aircraft Y for the visual; and even told him S turns approved East of final if needed. He said in sight and follow.I switched Aircraft Y to the Tower. Then I monitored the Tower frequency to see what they were going to do. They did not say anything to the Aircraft X to keep your speed up or tell Aircraft Y to slow and then waited for the Aircraft Y to get to roughly 1;100 feet and less than two miles. The tower says to Aircraft Y 'final got you too close to Aircraft X ahead' and then asked Aircraft Y 'can you accept RWY18L?'  Aircraft Y replied 'why sure'. My beef with the tower is that they intentionally and deliberately waited to create an unsafe situation for Aircraft Y; creating an unsafe unstable approach for Aircraft Y to change runways at a thousand feet less than 2 miles from the runway intended to land. Tower says they cannot do speed control on final unless they need it for a departure; or they will send an aircraft around to get an aircraft off the runway. The tower takes no responsibility or accountability for working safe and expediting traffic. The tower controller intentionally and deliberately waited to create an unsafe situation for the pilot instead of offering another runway that was available right next to the one they are landing on before it even became a factor. Poor judgment by the tower controller on a situation that could've been resolved so much sooner. The tower continues to create unsafe situations not only with arrivals but also with departures especially in IFR conditions knowing that departures need at 2 increasing to 3 with ceilings at 200 feet.
F11 Approach Controller reports of the Tower waiting to change the runway of an arrival that was catching the preceding arrival. The second aircraft was changed to a parallel runway and landed safely.