Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 2.0
Situational Awareness
ATC Issue All Types; Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure
I was not working at the time of the event. I was told about the event after the fact. After hearing about the event; I watched the replay and realized it was controller error. Aircraft X was initially told on upwind to keep his pattern tight and the Controller would try to get him another touch and go ahead of a regional jet. On downwind; the Cessna was told to expect to follow the regional jet and report the jet on 4 mile final in-sight. The Cessna reported the CRJ in sight abeam the numbers; and the Controller told the Cessna 'Runway 27 cleared for the option.' The Cessna shortly after turned base into the oncoming regional jet. The controller took no action. The regional jet reported the traffic to Tower. Tower asked Cessna to verify the CRJ was in sight; Cessna affirmed. The regional pilot told the Cessna he was not supposed to [turn] base in front of him. Separation was .14 mile and 100 feet. The controller then cleared the Cessna for low approach; separation was .06 mile and 100 feet. The Cessna got low enough to the runway to drop off the radar; when the Controller asked Cessna to confirm he was doing a low approach; which the Cessna affirmed. I was told that the CRJ was not clear of the runway while the Cessna was doing low approach. CID does not have ASDE-X. Ground and Local position were split.
A Controller reported a Cessna was supposed to follow Air Carrier traffic on short final but turned into the traffic due to incomplete instructions from the Local Controller.