Large Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1.0
Confusion; Physiological - Other; Situational Awareness
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Air Traffic Control Separated Traffic; Flight Crew Became Reoriented; Flight Crew Requested ATC Assistance / Clarification
Chart Or Publication; Human Factors; Procedure; Weather
I was working Ground Control taxiing three aircraft from the ramp to runway 11 via E (from directly below the tower to the far west side). As the first two made their way west a fog began to roll in. I was waiting for Aircraft A to come out the other side of the fog but it seemed to be taking longer than it should. I noticed Aircraft Y begin his take off roll at the same time I found the Aircraft X on the AMASS (Airport Movement Area Safety System) heading towards Runway 11 on taxiway F. I yelled for Local Control to stop him and he canceled his take off clearance. Aircraft X keyed up as I attempted to reach out to him. He said that he must have taken a wrong turn and shouldn't he continue forward. I told him to hold his position and asked if he had room to make a 180 without entering the runway. I don't recall the exact answer but it was a no. Aircraft Y exited the runway and I asked local if I could enter the runway to turn him around. He said wait for the next lander which was Aircraft Z. Aircraft Z landed exited at taxiway D (just before F). I was able to put Aircraft A on to the runway and exited him at taxiway D as well west bound on taxiway F. The CIC (Controller in Charge) reported it downstairs to the Supervisor and the Supervisor reported it to whoever. However I overheard the conversation and no one repeating the situation mentions Aircraft Z that still landed. I didn't want anyone to get in trouble should they pull tapes. I assumed when I asked to enter the runway that Aircraft Z was being sent around. And I admit when he said he was landing I didn't argue. It maybe had been unsaid but I did think maybe a go around might add a problem in the weather even though Aircraft X was outside the 'gate' on the AMASS he was facing the runway stationary. I believe it was handled the best way possible in all honesty. I just didn't want it to look like a possible event was being hidden.
Tower Ground Controller reported a taxiing aircraft entered a runway at the same time a departing aircraft was beginning its takeoff roll.