Narrative:

Our flight was departed on time at mci, xx pm local. The WX was 400 overcast 1 1/2 mi drizzle and fog, wind 130/4 altitude 30.38. We were cleared to runway 27 by ground control and taxied out with engine anti-ice on and indicating normally. My first officer was getting IOE and had 33 hours experience in the medium large transport. Taxiing out the surfaces seemed to have reasonably good traction. We were asked to hold short of runway 27 and used this time to run the engines up to 55 percent N1 to clear and heat the engines. After we were cleared into position for takeoff we asked for and received clearance for a final runup at 75 percent N1. With the runup completed I xferred the aircraft to the first officer for brake release and power increase as the takeoff roll began, we experienced a drift to the left which the first officer was unable to counter. I soon recognized the need to assume control and attempted to regain centerline. When I realized my efforts had failed I reversed the engines for deceleration. We left the runway and bumped along on the ground for a few seconds, which caused me to fear for the possibility of fire. I therefore ordered an evacuation which was successful west/O injuries. The aircraft was not damaged, but had to be towed from the snow and mud. This incident is still being investigated. We hope the flight recorder will provide the cause of the left drift. The runway surface was very icy so aircraft control was not possible. I am concerned that our policy should have dictated that I make the takeoff so that we would not have a change of controls back and forth between crew members in the event of a slide developing.

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Original NASA ASRS Text

Title: MLG TYPE ACFT ON TKOF STARTED SLIDING ON ICY RWY CAPT UNABLE TO CORRECT DRIFTED OFF RWY. EVACUATED PASSENGERS.

Narrative: OUR FLT WAS DEPARTED ON TIME AT MCI, XX PM LCL. THE WX WAS 400 OVCST 1 1/2 MI DRIZZLE AND FOG, WIND 130/4 ALT 30.38. WE WERE CLRED TO RWY 27 BY GND CTL AND TAXIED OUT WITH ENG ANTI-ICE ON AND INDICATING NORMALLY. MY F/O WAS GETTING IOE AND HAD 33 HRS EXPERIENCE IN THE MLG. TAXIING OUT THE SURFACES SEEMED TO HAVE REASONABLY GOOD TRACTION. WE WERE ASKED TO HOLD SHORT OF RWY 27 AND USED THIS TIME TO RUN THE ENGS UP TO 55 PERCENT N1 TO CLR AND HEAT THE ENGS. AFTER WE WERE CLRED INTO POS FOR TKOF WE ASKED FOR AND RECEIVED CLRNC FOR A FINAL RUNUP AT 75 PERCENT N1. WITH THE RUNUP COMPLETED I XFERRED THE ACFT TO THE F/O FOR BRAKE RELEASE AND PWR INCREASE AS THE TKOF ROLL BEGAN, WE EXPERIENCED A DRIFT TO THE L WHICH THE F/O WAS UNABLE TO COUNTER. I SOON RECOGNIZED THE NEED TO ASSUME CTL AND ATTEMPTED TO REGAIN CTRLINE. WHEN I REALIZED MY EFFORTS HAD FAILED I REVERSED THE ENGS FOR DECELERATION. WE LEFT THE RWY AND BUMPED ALONG ON THE GND FOR A FEW SECS, WHICH CAUSED ME TO FEAR FOR THE POSSIBILITY OF FIRE. I THEREFORE ORDERED AN EVACUATION WHICH WAS SUCCESSFUL W/O INJURIES. THE ACFT WAS NOT DAMAGED, BUT HAD TO BE TOWED FROM THE SNOW AND MUD. THIS INCIDENT IS STILL BEING INVESTIGATED. WE HOPE THE FLT RECORDER WILL PROVIDE THE CAUSE OF THE LEFT DRIFT. THE RWY SURFACE WAS VERY ICY SO ACFT CTL WAS NOT POSSIBLE. I AM CONCERNED THAT OUR POLICY SHOULD HAVE DICTATED THAT I MAKE THE TKOF SO THAT WE WOULD NOT HAVE A CHANGE OF CTLS BACK AND FORTH BTWN CREW MEMBERS IN THE EVENT OF A SLIDE DEVELOPING.

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.