Narrative:

We were parked on the east ramp at dupage, il airport (dpa) and called for taxi and IFR clearance to chicago-meigs (cgx). Ground control responded 'your choice of runways, wind 060 degrees at 10 KTS.' the PNF responded 'well we don't want the short one, ah, ---15-33. We will take whichever one is convenient for you -- ah, runway 1 or, ah, 10-28.'ground immediately responded 'roger taxi to runway 10, wind (direction and speed).' we had just landed on runway 1L, 25 mins before and had used runway 19R 2 days before and I was 'primed' to 'hear' runway '1' something (left or right) in this clearance. Well, what I wasn't primed to hear was runway 10. The PNF and I did not vocally confirm the taxi clearance (we fly together exclusively as a corporate flight crew 25 hours per month). As we entered a 'RAT-maze' set of txwys on the east side of the airport, the ground controller called 'I have your IFR clearance when ready to copy.' the PNF responded 'ready to copy' and the controller began to immediately issue the clearance and of course it was different than 'cleared as filed.' this diverted the PNF's attention from the taxi map of the airport and prevented his normal duty of following taxi progress on the airport diagram. This allowed me to taxi using a route that would cross the runway we were cleared to taxi to. It is our cockpit resource management policy for both pilots to clear (left and right) all runways we taxi across, so when I asked clear right? The PNF looked up and saw we were approaching our assigned runway and at the same time the ground controller saw the situation and radioed 'hold your position!!' I braked and stopped short of the runway. This was a case of hearing what you thought you would. But our cockpit resource management broke down by not discussing the taxi clearance and allowed a potential conflict.

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Original NASA ASRS Text

Title: GND CTLR STOPPED ACFT JUST PRIOR TO RWY INCURSION, FLC CONFUSION ON TAXI DIRECTIONS AND RWY IN USE.

Narrative: WE WERE PARKED ON THE E RAMP AT DUPAGE, IL ARPT (DPA) AND CALLED FOR TAXI AND IFR CLRNC TO CHICAGO-MEIGS (CGX). GND CTL RESPONDED 'YOUR CHOICE OF RWYS, WIND 060 DEGS AT 10 KTS.' THE PNF RESPONDED 'WELL WE DON'T WANT THE SHORT ONE, AH, ---15-33. WE WILL TAKE WHICHEVER ONE IS CONVENIENT FOR YOU -- AH, RUNWAY 1 OR, AH, 10-28.'GND IMMEDIATELY RESPONDED 'ROGER TAXI TO RWY 10, WIND (DIRECTION AND SPD).' WE HAD JUST LANDED ON RWY 1L, 25 MINS BEFORE AND HAD USED RWY 19R 2 DAYS BEFORE AND I WAS 'PRIMED' TO 'HEAR' RWY '1' SOMETHING (L OR R) IN THIS CLRNC. WELL, WHAT I WASN'T PRIMED TO HEAR WAS RWY 10. THE PNF AND I DID NOT VOCALLY CONFIRM THE TAXI CLRNC (WE FLY TOGETHER EXCLUSIVELY AS A CORPORATE FLT CREW 25 HRS PER MONTH). AS WE ENTERED A 'RAT-MAZE' SET OF TXWYS ON THE E SIDE OF THE ARPT, THE GND CTLR CALLED 'I HAVE YOUR IFR CLRNC WHEN READY TO COPY.' THE PNF RESPONDED 'READY TO COPY' AND THE CTLR BEGAN TO IMMEDIATELY ISSUE THE CLRNC AND OF COURSE IT WAS DIFFERENT THAN 'CLRED AS FILED.' THIS DIVERTED THE PNF'S ATTN FROM THE TAXI MAP OF THE ARPT AND PREVENTED HIS NORMAL DUTY OF FOLLOWING TAXI PROGRESS ON THE ARPT DIAGRAM. THIS ALLOWED ME TO TAXI USING A RTE THAT WOULD CROSS THE RWY WE WERE CLRED TO TAXI TO. IT IS OUR COCKPIT RESOURCE MGMNT POLICY FOR BOTH PLTS TO CLR (L AND R) ALL RWYS WE TAXI ACROSS, SO WHEN I ASKED CLR R? THE PNF LOOKED UP AND SAW WE WERE APCHING OUR ASSIGNED RWY AND AT THE SAME TIME THE GND CTLR SAW THE SIT AND RADIOED 'HOLD YOUR POS!!' I BRAKED AND STOPPED SHORT OF THE RWY. THIS WAS A CASE OF HEARING WHAT YOU THOUGHT YOU WOULD. BUT OUR COCKPIT RESOURCE MGMNT BROKE DOWN BY NOT DISCUSSING THE TAXI CLRNC AND ALLOWED A POTENTIAL CONFLICT.

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.