Narrative:

Taxi clearance was: runway 25R via K, intersection 30, taxiway J. I taxied east on K, and turned right at intersection 30. I was intending to turn left on J, and continue east to the end of the runway. The left turn should have been the first opening or clrway to my left as I turned right on intersection 30. As I just started to make the left turn on what I thought was taxiway J, I realized that I had instead, missed J and entered runway 25R, the active runway. I was still on south ground control, so I heard the ground controller say 'mdt you're on the runway.' I think I said 'I realize that now!' and the controller said to make the left turn at intersection 26. At this time, a heavy transport flight, who appeared to be a mi or so out, started a missed approach. The controller had me copy down a telephone number, and wanted a call at next landing. I recall seeing a lot of red day-glo barriers at the corner of taxiway K and intersection 30, and either missed seeing the proper turn onto J, or thought we were still using runway 25R as a taxiway, as we had for the past few weeks, during the taxiway repair program. Supplemental information from acn 206535: clearance was received with the reply 'expedite.' the captain reacted with a taxi speed that was above normal in my opinion. My job is to execute the 'before takeoff' checks which brings my eyes into the cockpit for the computation of takeoff data and various other duties. The captain's primary job is to taxi the aircraft. While taxiing out with my head 'down,' the captain made a verbal sound of distress. I looked up, noticed we were on runway 25R (eastbound) and I saw a heavy transport in the go around mode. We taxied clear and we were asked to contact a telephone number. Causative factors: 1) unnecessary rushing out of gate. 2) excessive taxi speed. 3) cockpit checks that require 1 crew member to divert attention inside cockpit. 4) as a first officer, I failed to monitor the captain's taxi progress, and to alert him of the high taxi speed.

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Original NASA ASRS Text

Title: ACR LTT FAILED TO FOLLOW GND CTL INSTRUCTIONS AND TAXIED ONTO AN ACTIVE RWY CAUSING A HVT TO GAR. GND CTL AND TWR PREVENTED A SERIOUS CONDITION TO WORSEN.

Narrative: TAXI CLRNC WAS: RWY 25R VIA K, INTXN 30, TAXIWAY J. I TAXIED E ON K, AND TURNED R AT INTXN 30. I WAS INTENDING TO TURN L ON J, AND CONTINUE E TO THE END OF THE RWY. THE L TURN SHOULD HAVE BEEN THE FIRST OPENING OR CLRWAY TO MY L AS I TURNED R ON INTXN 30. AS I JUST STARTED TO MAKE THE L TURN ON WHAT I THOUGHT WAS TAXIWAY J, I REALIZED THAT I HAD INSTEAD, MISSED J AND ENTERED RWY 25R, THE ACTIVE RWY. I WAS STILL ON S GND CTL, SO I HEARD THE GND CTLR SAY 'MDT YOU'RE ON THE RWY.' I THINK I SAID 'I REALIZE THAT NOW!' AND THE CTLR SAID TO MAKE THE L TURN AT INTXN 26. AT THIS TIME, A HVT FLT, WHO APPEARED TO BE A MI OR SO OUT, STARTED A MISSED APCH. THE CTLR HAD ME COPY DOWN A TELEPHONE NUMBER, AND WANTED A CALL AT NEXT LNDG. I RECALL SEEING A LOT OF RED DAY-GLO BARRIERS AT THE CORNER OF TAXIWAY K AND INTXN 30, AND EITHER MISSED SEEING THE PROPER TURN ONTO J, OR THOUGHT WE WERE STILL USING RWY 25R AS A TAXIWAY, AS WE HAD FOR THE PAST FEW WKS, DURING THE TAXIWAY REPAIR PROGRAM. SUPPLEMENTAL INFO FROM ACN 206535: CLRNC WAS RECEIVED WITH THE REPLY 'EXPEDITE.' THE CAPT REACTED WITH A TAXI SPD THAT WAS ABOVE NORMAL IN MY OPINION. MY JOB IS TO EXECUTE THE 'BEFORE TKOF' CHKS WHICH BRINGS MY EYES INTO THE COCKPIT FOR THE COMPUTATION OF TKOF DATA AND VARIOUS OTHER DUTIES. THE CAPT'S PRIMARY JOB IS TO TAXI THE ACFT. WHILE TAXIING OUT WITH MY HEAD 'DOWN,' THE CAPT MADE A VERBAL SOUND OF DISTRESS. I LOOKED UP, NOTICED WE WERE ON RWY 25R (EBOUND) AND I SAW A HVT IN THE GAR MODE. WE TAXIED CLR AND WE WERE ASKED TO CONTACT A TELEPHONE NUMBER. CAUSATIVE FACTORS: 1) UNNECESSARY RUSHING OUT OF GATE. 2) EXCESSIVE TAXI SPD. 3) COCKPIT CHKS THAT REQUIRE 1 CREW MEMBER TO DIVERT ATTN INSIDE COCKPIT. 4) AS A FO, I FAILED TO MONITOR THE CAPT'S TAXI PROGRESS, AND TO ALERT HIM OF THE HIGH TAXI SPD.

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.