Narrative:

At approximately XA50Z on jul/tue/03 at chicago O'hare airport (kord), our aircraft was instructed to taxi from FBO to runway 14L at taxiway V and hold short. When we started our taxi from the FBO, we inadvertently turned left onto taxiway V1 instead of turning right onto taxiway V1 to taxiway V. When we realized what we had done, we immediately stopped and advised ATC what had happened. The ground controller was very busy with other traffic on other parts of the airport and became very disgruntled when he called us back to turn around. At any time during this event there was not any conflict with any other aircraft or automatic and we did not taxi onto any active runways. After our aircraft taxied to runway 14L at taxiway V, we were instructed to contact tower control for the remainder of our taxi and takeoff instructions. Tower control told us to taxi onto runway 18/36 to taxiway H and taxi to runway 9L. After reaching runway 9L, we were cleared into position and hold. Both pilots in our cockpit saw an MD80 aircraft that landed just prior to our taking the active runway and turned off onto a high speed taxiway P, off runway 9L. At the same time we received a clearance for immediate takeoff and to fly the runway heading. We acknowledged and started our takeoff roll and at approximately 80 KIAS both pilots notice the MD80 aircraft return to the active runway of 9L. At this time both pilots performed an abort procedure and simultaneously the tower shouted to all aircraft to stop and cancelled all takeoff clrncs. We turned off the runway at taxiway H1 at approximately the half way point on the runway and was instructed to taxi back to runway 9L on taxiway H and hold short of taxiway east. At no time did any aircraft come closer than approximately 4000 ft apart througout the event. I called the tower after our uneventful flight and talked to the tower cabin attendant supervisor and he told me that the incident was under investigation and that it appeared to be a mistake on the controller's side. I noticed that at the time of the incident air and ground traffic were extremely busy. Radio frequencys were non-stop with activity between pilots and controllers. This is a very large airport with many aircraft on the ground and air to be watched and guided. I see that all these factors led to the above inicident.

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Original NASA ASRS Text

Title: DURING TKOF ROLL AT ORD, HS-25 CREW OBSERVE AN MD-80 TURN BACK ONTO THE RWY AFTER IT HAD TURNED OFF.

Narrative: AT APPROX XA50Z ON JUL/TUE/03 AT CHICAGO O'HARE ARPT (KORD), OUR ACFT WAS INSTRUCTED TO TAXI FROM FBO TO RWY 14L AT TXWY V AND HOLD SHORT. WHEN WE STARTED OUR TAXI FROM THE FBO, WE INADVERTENTLY TURNED L ONTO TXWY V1 INSTEAD OF TURNING R ONTO TXWY V1 TO TXWY V. WHEN WE REALIZED WHAT WE HAD DONE, WE IMMEDIATELY STOPPED AND ADVISED ATC WHAT HAD HAPPENED. THE GND CTLR WAS VERY BUSY WITH OTHER TFC ON OTHER PARTS OF THE ARPT AND BECAME VERY DISGRUNTLED WHEN HE CALLED US BACK TO TURN AROUND. AT ANY TIME DURING THIS EVENT THERE WAS NOT ANY CONFLICT WITH ANY OTHER ACFT OR AUTO AND WE DID NOT TAXI ONTO ANY ACTIVE RWYS. AFTER OUR ACFT TAXIED TO RWY 14L AT TXWY V, WE WERE INSTRUCTED TO CONTACT TWR CTL FOR THE REMAINDER OF OUR TAXI AND TKOF INSTRUCTIONS. TWR CTL TOLD US TO TAXI ONTO RWY 18/36 TO TXWY H AND TAXI TO RWY 9L. AFTER REACHING RWY 9L, WE WERE CLRED INTO POS AND HOLD. BOTH PLTS IN OUR COCKPIT SAW AN MD80 ACFT THAT LANDED JUST PRIOR TO OUR TAKING THE ACTIVE RWY AND TURNED OFF ONTO A HIGH SPD TXWY P, OFF RWY 9L. AT THE SAME TIME WE RECEIVED A CLRNC FOR IMMEDIATE TKOF AND TO FLY THE RWY HDG. WE ACKNOWLEDGED AND STARTED OUR TKOF ROLL AND AT APPROX 80 KIAS BOTH PLTS NOTICE THE MD80 ACFT RETURN TO THE ACTIVE RWY OF 9L. AT THIS TIME BOTH PLTS PERFORMED AN ABORT PROC AND SIMULTANEOUSLY THE TWR SHOUTED TO ALL ACFT TO STOP AND CANCELLED ALL TKOF CLRNCS. WE TURNED OFF THE RWY AT TXWY H1 AT APPROX THE HALF WAY POINT ON THE RWY AND WAS INSTRUCTED TO TAXI BACK TO RWY 9L ON TXWY H AND HOLD SHORT OF TXWY E. AT NO TIME DID ANY ACFT COME CLOSER THAN APPROX 4000 FT APART THROUGOUT THE EVENT. I CALLED THE TWR AFTER OUR UNEVENTFUL FLT AND TALKED TO THE TWR CAB SUPVR AND HE TOLD ME THAT THE INCIDENT WAS UNDER INVESTIGATION AND THAT IT APPEARED TO BE A MISTAKE ON THE CTLR'S SIDE. I NOTICED THAT AT THE TIME OF THE INCIDENT AIR AND GND TFC WERE EXTREMELY BUSY. RADIO FREQS WERE NON-STOP WITH ACTIVITY BTWN PLTS AND CTLRS. THIS IS A VERY LARGE ARPT WITH MANY ACFT ON THE GND AND AIR TO BE WATCHED AND GUIDED. I SEE THAT ALL THESE FACTORS LED TO THE ABOVE INICIDENT.

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.