Narrative:

146 vehicles authority/authorized by day airport to operate on the airport, txwys and runways. Truck called ground control, requested to cross runway 6L to the ramp with 2 trash trucks. Truck was advised to hold short of runway 6L. Vehicle crossed anyway. A BE90, on very short final, not in sight (visibility 3/4 mi) was sent around when it was noticed that the trucks were on the runway. I believe this occurred because day has 146 vehicles authority/authorized to use the airport and no formal training for operating on the airport.

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Original NASA ASRS Text

Title: TWR CTLR GIVES GND VEHICLES A HOLD SHORT CLRNC. VEHICLES CROSS ANYWAY AND FORCE A BE90 TO MAKE A GAR. CTLR INDICATES TOO MANY VEHICLES ON ARPT AND NOT SUFFICIENT TRAINING.

Narrative: 146 VEHICLES AUTH BY DAY ARPT TO OPERATE ON THE ARPT, TXWYS AND RWYS. TRUCK CALLED GND CTL, REQUESTED TO CROSS RWY 6L TO THE RAMP WITH 2 TRASH TRUCKS. TRUCK WAS ADVISED TO HOLD SHORT OF RWY 6L. VEHICLE CROSSED ANYWAY. A BE90, ON VERY SHORT FINAL, NOT IN SIGHT (VISIBILITY 3/4 MI) WAS SENT AROUND WHEN IT WAS NOTICED THAT THE TRUCKS WERE ON THE RWY. I BELIEVE THIS OCCURRED BECAUSE DAY HAS 146 VEHICLES AUTH TO USE THE ARPT AND NO FORMAL TRAINING FOR OPERATING ON THE ARPT.

Data retrieved from NASA's ASRS site as of July 2007 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.