Bwi tower controller has an aircraft cleared for takeoff; with another aircraft on 5 mile final. Fro...

Attributes
ACN	1240948
Time
Date	201502
Local Time Of Day	1801-2400
Place
Locale Reference	BWI.Tower
State Reference	MD
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	None
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 25
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Ground Incursion Runway

Narrative:

Aircraft X was cleared for takeoff; traffic 5 mile final aircraft Y. Supervisor observes target runway 10 near taxiway G on asde-X and I instructed aircraft X to cancel takeoff clearance and luaw (line up and wait); due to target. Aircraft X reads back cancel takeoff and luaw and sees a truck on the runway. Aircraft Y checks in on initial contact 3 mile final. I cancelled aircraft Y landing clearance and instructed to climb to 2;000 feet and heading of 200. I coordinated with pct TRACON north final controller. I observe aircraft Y is not turning or climbing on the radar and I re-issued climb to 2;000 feet and aircraft Y delayed read back and questioned to say again. I repeated my instruction and that traffic is on the runway. I observed aircraft Y in the turn and climb.I should say 'cancel approach clearance' or 'go around' and 'traffic on the runway'. I did not confirm a read back from aircraft Y.

Original NASA ASRS Text

Title: BWI Tower Controller has an aircraft cleared for takeoff; with another aircraft on 5 mile final. Front Line Manager observes a vehicle on the runway and advises controller. Controller cancels take off clearance and sends traffic on final around.

Narrative: Aircraft X was cleared for takeoff; traffic 5 mile final Aircraft Y. Supervisor observes target runway 10 near taxiway G on ASDE-X and I instructed Aircraft X to cancel takeoff clearance and LUAW (Line Up and Wait); due to target. Aircraft X reads back cancel takeoff and LUAW and sees a truck on the runway. Aircraft Y checks in on initial contact 3 mile final. I cancelled Aircraft Y landing clearance and instructed to climb to 2;000 feet and heading of 200. I coordinated with PCT TRACON North Final controller. I observe Aircraft Y is not turning or climbing on the radar and I re-issued climb to 2;000 feet and Aircraft Y delayed read back and questioned to say again. I repeated my instruction and that traffic is on the runway. I observed Aircraft Y in the turn and climb.I should say 'Cancel approach clearance' or 'Go around' and 'Traffic on the runway'. I did not confirm a read back from Aircraft Y.

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.

Bwi tower controller has an aircraft cleared for takeoff; with another aircraft on 5 mile final. Front line manager observes a vehicle on the runway and advises controller. Controller cancels take off clearance and sends traffic on final around.