Large Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 5
Communication Breakdown; Confusion; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Airspace Structure; Human Factors; Procedure
I was working West Radar during a runway change from NE to SW landing direction. I had a departure going southeast. I handed aircraft off to East Radar but held onto aircraft to put him over the airport to get above departure and arrival traffic. Simultaneously East Radar had a departure going northeast but needed a turn to the north. I observed a jet off the arrival and told East Radar that they could go into my airspace with Aircraft X. My intention with this was roughly a 350 heading to ride the boundary to allow the climb with the arrival Medevac. I turned a VFR aircraft; Aircraft Y; at 4500 feet to heading 180 to go directly over the airport. The East controller had turned Aircraft X further west than I anticipated. I saw the conflict and advised East Radar. Aircraft X was at 3700 feet when East issued Aircraft X to stop at 4000 feet. I immediately turned my aircraft further southwest to avoid an RA and called traffic. Aircraft Y reported the air carrier in sight and was instructed to maintain visual with Aircraft X who was at 4200 descending back down to 4000. Aircraft Y then descended rapidly into Aircraft X anticipating that Aircraft X was climbing. I had advised Aircraft Y that Aircraft X was at 4000 feet. Aircraft X responded to an RA causing him to descend.My aircraft was in East Radar's airspace. However; the runway change we were performing put him in my airspace. This caused the aircraft to be on 2 different frequencies. Additionally; I should have been more clear about my intentions with Aircraft Y and ascertained East Radar's intentions more clearly.I should have had better situational awareness for myself. With the complexity of the runway change I did let Aircraft Y extend further East than normal. I should have been clearer about my intentions.
RSW TRACON Controller reported during a runway/airspace change he approved an adjacent sector's aircraft to enter their airspace resulting in a conflict with a VFR aircraft they were working.