Narrative:

Flew coupled ILS to 500 ft -- landed visually on runway 03. WX 600 broken 1100 overcast 2L-F 40/39 wind 350/6. Land, automatic brake turn off at taxiway D normal. Stopped on taxiway D awaiting taxi clearance. Cleared to gate -- proceeded west on taxiway D -- made 45 left normal, entered second 45 at normal and appropriate taxi speed. After approximately 15 degrees of turn, it felt like the nosewheel went hard over left. Loss of nosewheel traction was instant --anxious and aircraft went tangent to the turn arc. I released nosewheel steering and applied brakes with no effect. Aircraft shuddered almost violently, brakes seemed to chatter, but the shudder/chatter may have been the nosewheel hopping. Flight officer joined me on the brakes. Deceleration was absolutely nil. I modulated nosewheel steering and brakes attempting to regain control but nothing took effect. As it became obvious that we were going in the dirt I applied reverse thrust and centered the nosewheel steering. The reverse was in desperation, but I wanted the nosewheel steering straight so that we would not shear off the nose gear. Skid marks show that I had the nosewheel straight, not locked left for a majority of the last few ft although the nose gear plowed sideways into the mud. I am aware of the S80 nose gear tire patch in a turn and was modulating the steering tiller and brakes try. Aircraft stopped in soft grass covered soil in a right list. I made a PA -- keep your seats -- repeated 3 times. This was in conjunction with the formal crew briefing that I held with all flight attendant crew prior to dfw departure in which I briefed evacuation procedures. We shut down engines in accordance with checklist and put aircraft on APU power. We made the requisite calls to ground, operations, et al. I made several PA's to passenger to keep them informed and advised. Sat sent vehicles to collect passenger and crew, I was last to exit aircraft. All exited out the aft airstairs. I instructed all crew to stay out of the public areas and to avoid the assembled news crews. Crew gathered in sat operations for debrief. No passenger reported injury, flight attendants saw none.

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Original NASA ASRS Text

Title: TXWY EXCURSION. BRAKING ACTION NIL.

Narrative: FLEW COUPLED ILS TO 500 FT -- LANDED VISUALLY ON RWY 03. WX 600 BROKEN 1100 OVCST 2L-F 40/39 WIND 350/6. LAND, AUTO BRAKE TURN OFF AT TXWY D NORMAL. STOPPED ON TXWY D AWAITING TAXI CLRNC. CLRED TO GATE -- PROCEEDED W ON TXWY D -- MADE 45 L NORMAL, ENTERED SECOND 45 AT NORMAL AND APPROPRIATE TAXI SPD. AFTER APPROX 15 DEGS OF TURN, IT FELT LIKE THE NOSEWHEEL WENT HARD OVER L. LOSS OF NOSEWHEEL TRACTION WAS INSTANT --ANXIOUS AND ACFT WENT TANGENT TO THE TURN ARC. I RELEASED NOSEWHEEL STEERING AND APPLIED BRAKES WITH NO EFFECT. ACFT SHUDDERED ALMOST VIOLENTLY, BRAKES SEEMED TO CHATTER, BUT THE SHUDDER/CHATTER MAY HAVE BEEN THE NOSEWHEEL HOPPING. FLT OFFICER JOINED ME ON THE BRAKES. DECELERATION WAS ABSOLUTELY NIL. I MODULATED NOSEWHEEL STEERING AND BRAKES ATTEMPTING TO REGAIN CTL BUT NOTHING TOOK EFFECT. AS IT BECAME OBVIOUS THAT WE WERE GOING IN THE DIRT I APPLIED REVERSE THRUST AND CTRED THE NOSEWHEEL STEERING. THE REVERSE WAS IN DESPERATION, BUT I WANTED THE NOSEWHEEL STEERING STRAIGHT SO THAT WE WOULD NOT SHEAR OFF THE NOSE GEAR. SKID MARKS SHOW THAT I HAD THE NOSEWHEEL STRAIGHT, NOT LOCKED L FOR A MAJORITY OF THE LAST FEW FT ALTHOUGH THE NOSE GEAR PLOWED SIDEWAYS INTO THE MUD. I AM AWARE OF THE S80 NOSE GEAR TIRE PATCH IN A TURN AND WAS MODULATING THE STEERING TILLER AND BRAKES TRY. ACFT STOPPED IN SOFT GRASS COVERED SOIL IN A RIGHT LIST. I MADE A PA -- KEEP YOUR SEATS -- REPEATED 3 TIMES. THIS WAS IN CONJUNCTION WITH THE FORMAL CREW BRIEFING THAT I HELD WITH ALL FA CREW PRIOR TO DFW DEP IN WHICH I BRIEFED EVACUATION PROCS. WE SHUT DOWN ENGS IAW CHKLIST AND PUT ACFT ON APU PWR. WE MADE THE REQUISITE CALLS TO GND, OPS, ET AL. I MADE SEVERAL PA'S TO PAX TO KEEP THEM INFORMED AND ADVISED. SAT SENT VEHICLES TO COLLECT PAX AND CREW, I WAS LAST TO EXIT ACFT. ALL EXITED OUT THE AFT AIRSTAIRS. I INSTRUCTED ALL CREW TO STAY OUT OF THE PUBLIC AREAS AND TO AVOID THE ASSEMBLED NEWS CREWS. CREW GATHERED IN SAT OPS FOR DEBRIEF. NO PAX RPTED INJURY, FLT ATTENDANTS SAW NONE.

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.