Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Developmental
Air Traffic Control Time Certified In Pos 1 (yrs) 0.4
Situational Awareness
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
Air Traffic Control Issued New Clearance
Procedure; Human Factors
I was working Local Control and had cleared Aircraft Y to land Runway 15. At some point prior to Aircraft Y on final for Runway 15 I taxied Aircraft X to Runway 33. Aircraft X then reached the end and called ready for departure.I missed Aircraft Y in my scan and cleared Aircraft X for takeoff Runway 33. I then realized that there was an aircraft (Aircraft Y) very near touchdown Runway 15 and cancelled Aircraft X takeoff clearance and instructed Aircraft X to turn left at B8 taxiway and hold short of Runway 33 due to the fact Aircraft X was already past the hold bars entering the runway; and as Aircraft Y was on the runway.I felt issuing a go around would have been more dangerous at this point due to the mountainous terrain and Aircraft Y was already on the runway and decelerating; and Aircraft X was on the runway. Aircraft X taxied clear of the runway at B8; and Aircraft Y taxied clear of the runway at A5. Aircraft X was then cleared for takeoff runway 33 and Aircraft Y taxied to the FBO.I could have been more precise and complete on my scan; had I done that; the situation would have never happened. If I had realized it sooner I could have cancelled Aircraft X takeoff clearance prior to the aircraft entering the runway. Maybe a memory aid to help with the scan of arrival aircraft.
I was working standalone CIC. There was training on another position which had my attention due to potential conflicts. I heard Local Control cancel Aircraft X takeoff clearance for runway 33 and instructed the aircraft to exit B8 and hold short of the runway. I went to look what was going on and saw Aircraft Y was landing Runway 15 as Aircraft X was on the runway exiting at B8. Aircraft X had never started his departure roll and Aircraft Y exited the runway at A5. Aircraft X was cleared for takeoff once Aircraft Y was well on the taxiway taxiing to the ramp.
Local Controller reported clearing an aircraft for takeoff with another aircraft on short final in the opposite direction on the same runway.