Jetstream 41
Air Traffic Control Developmental
Communication Breakdown; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors
At the time of the incident I was being trained on the Local position. A Jetstream 41; requested to execute S-turns to loose altitude and land Runway 24. A Dash 8-300; was holding short of Runway 24 with a release time to ZZZ. Jetstream 41 was on a 3 mile final and had to loose a lot of altitude to land. With the distance between Jetstream 41 and the runway; taking into account the altitude of the aircraft; I believed it would delay Dash 8-300 passed the release time. Taking that into account I told Jetstream 41 to enter a right downwind for Runway 34 so I could depart Dash 8-300. At this time I issued traffic and cleared Dash 8-300 for take off. A PA-28 was on a 6-5 mile final Runway 34 and my plan was to sequence the Jetstream 41 behind the PA-28. I failed to coordinate with RADAR about Jetstream 41 changing runways and my Instructor stepped in to coordinate. With Jetstream 41 flying a standard pattern I believed there to be sufficient time to exchange traffic between Jetstream 41 and the PA-28. When I saw Jetstream 41 turning base early; about 0.5 miles; I quickly turned my attention to Dash 8-300 and in turn cancelled the take off clearance and told to hold position. I called traffic to PA-28 advising him of the Jetstream 41 in right base for Runway 34. The pilot reported it insight. Jetstream 41 landed; Dash 8-300 taxied off the runway; and PA-28 landed shortly after. Paint a better picture for all the aircraft involved; letting them know what is going. If I had told Jetstream 41 to enter right downwind for Runway 34 advising him that he is number two and exchanging traffic with Jetstream 41 and PA-28 it would have worked out a lot better allowing Dash 8-300 to depart without any trouble.
A Developmental working Local Controller described an unsafe event when he/she failed to provide adequate traffic information to several pattern and departure aircraft utilizing intersecting runways.