Narrative:

Aircraft X was in traffic pattern on runway 36 and requested runway 27 for crosswind landings. I was performing OJT with a trainee that was on only his second hour of local control. He put aircraft X in the right downwind for runway 27 and was wondering if he should extend him because we had a jet call ready for departure runway 36. About the same time another aircraft checked on inbound for runway 36 and the trainee asked a general question about whether to clear him to land or have him report final. We cleared the jet for departure runway 36 to get him through the intersection of runway 27 before aircraft X even turned base; then cleared aircraft X for the option runway 27. We forgot to get runway 27 from ground control and he had an airport vehicle just finishing up a runway check on runway 27 west of runway 36. I had scanned the runway and somehow missed the vehicle who was about to exit at C5 taxiway (the departure end of 27); when aircraft X asked; if there was a vehicle on the runway. We then noticed the airport vehicle exiting at the end and instructed aircraft X to go-around prior to them crossing the threshold. They went around and reentered the downwind for runway 27. We had the correct runway strips in our strip bay; but failed to do a proper scan of that. Had we done a proper scan of our strip bay; we would have noticed we didn't own runway 27. Ground control had some things going on so he wasn't aware of the situation.the only recommendation would be for me to improve my runway/strip bay scan that would have alerted me to the vehicle on the runway. I always check the runway; but maybe the vehicle was behind one of the pillars that separate the tower windows and I missed him. We teach our trainees how important it is to scan the runway and since he was so new on position; it didn't take many aircraft for him to feel a little overwhelmed. The only other recommendation I have is to always have vehicles contact tower (local control) prior to going on any runway. It is something that would have to change in our SOP and our LOA with the airport; but I believe would have prevented this from happening. This is an isolated incident here at fargo; so I don't believe it is a procedural (SOP or LOA) problem; but rather just a mistake by my trainee and myself.

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Original NASA ASRS Text

Title: Controller reports aircraft on final asks if a vehicle is on runway they are cleared to land on. Controller realizes he doesn't own runway currently and sends aircraft around.

Narrative: Aircraft X was in traffic pattern on Runway 36 and requested Runway 27 for crosswind landings. I was performing OJT with a trainee that was on only his second hour of Local Control. He put Aircraft X in the right downwind for Runway 27 and was wondering if he should extend him because we had a jet call ready for departure Runway 36. About the same time another aircraft checked on inbound for Runway 36 and the trainee asked a general question about whether to clear him to land or have him report final. We cleared the jet for departure Runway 36 to get him through the intersection of Runway 27 before Aircraft X even turned base; then cleared Aircraft X for the option Runway 27. We forgot to get Runway 27 from Ground Control and he had an airport vehicle just finishing up a runway check on Runway 27 west of Runway 36. I had scanned the runway and somehow missed the vehicle who was about to exit at C5 Taxiway (the departure end of 27); when Aircraft X asked; if there was a vehicle on the runway. We then noticed the airport vehicle exiting at the end and instructed Aircraft X to go-around prior to them crossing the threshold. They went around and reentered the downwind for Runway 27. We had the correct runway strips in our strip bay; but failed to do a proper scan of that. Had we done a proper scan of our strip bay; we would have noticed we didn't own Runway 27. Ground Control had some things going on so he wasn't aware of the situation.The only recommendation would be for me to improve my runway/strip bay scan that would have alerted me to the vehicle on the runway. I always check the runway; but maybe the vehicle was behind one of the pillars that separate the Tower windows and I missed him. We teach our trainees how important it is to scan the runway and since he was so new on position; it didn't take many aircraft for him to feel a little overwhelmed. The only other recommendation I have is to always have vehicles contact Tower (Local Control) prior to going on any runway. It is something that would have to change in our SOP and our LOA with the airport; but I believe would have prevented this from happening. This is an isolated incident here at Fargo; so I don't believe it is a procedural (SOP or LOA) problem; but rather just a mistake by my trainee and myself.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.