Narrative:

After landing in dodge city, ks, on runway 32, we began our taxi to the ramp area on taxiway a. Braking action had been reported as poor on the txwys and I was taxiing slowly with the propellers full forward to allow the use of reverse if necessary. I started an initial right turn into the ramp and noticed the nosewheel was not complying with the intended turn. I used reverse to bring the aircraft safely to a stop. A second attempt to make the turn was made using differential power from the left engine. As the aircraft began to move, the turn was again not being completed. Ice underneath packed snow prevented the aircraft from stopping despite using both reverse thrust and full brakes. The aircraft skidded ahead and the left main gear dropped off of the taxiway, thus clipping a taxiway light with the left propeller. The aircraft continued forward back onto the ramp area and I was able to guide it into the parking area 30 ft from where it slid off the cement. Both engines were then immediately shut down. I subsequently downgraded the braking action for the txwys and ramp area to nil. Strong winds causing snow to diminish the available area to enter the ramp, as well as mask the severity of the underlying ice were substantial factors today. As well, I felt the braking action report was clearly inaccurate as I watched several people nearly fall on the ramp, including myself, after we had parked at the gate. Supplemental information from acn 574958: we continued to the ramp. On my postflt inspection is when I noticed the damage to the left propeller. As we inspected the ramp there was a sheet of ice underneath the packed snow which I feel was the cause of the incident.

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Original NASA ASRS Text

Title: B190 FLT CREW EXPERIENCE TXWY EXCURSION DUE TO ICING CONDITIONS.

Narrative: AFTER LNDG IN DODGE CITY, KS, ON RWY 32, WE BEGAN OUR TAXI TO THE RAMP AREA ON TXWY A. BRAKING ACTION HAD BEEN RPTED AS POOR ON THE TXWYS AND I WAS TAXIING SLOWLY WITH THE PROPS FULL FORWARD TO ALLOW THE USE OF REVERSE IF NECESSARY. I STARTED AN INITIAL R TURN INTO THE RAMP AND NOTICED THE NOSEWHEEL WAS NOT COMPLYING WITH THE INTENDED TURN. I USED REVERSE TO BRING THE ACFT SAFELY TO A STOP. A SECOND ATTEMPT TO MAKE THE TURN WAS MADE USING DIFFERENTIAL PWR FROM THE L ENG. AS THE ACFT BEGAN TO MOVE, THE TURN WAS AGAIN NOT BEING COMPLETED. ICE UNDERNEATH PACKED SNOW PREVENTED THE ACFT FROM STOPPING DESPITE USING BOTH REVERSE THRUST AND FULL BRAKES. THE ACFT SKIDDED AHEAD AND THE L MAIN GEAR DROPPED OFF OF THE TXWY, THUS CLIPPING A TXWY LIGHT WITH THE L PROP. THE ACFT CONTINUED FORWARD BACK ONTO THE RAMP AREA AND I WAS ABLE TO GUIDE IT INTO THE PARKING AREA 30 FT FROM WHERE IT SLID OFF THE CEMENT. BOTH ENGS WERE THEN IMMEDIATELY SHUT DOWN. I SUBSEQUENTLY DOWNGRADED THE BRAKING ACTION FOR THE TXWYS AND RAMP AREA TO NIL. STRONG WINDS CAUSING SNOW TO DIMINISH THE AVAILABLE AREA TO ENTER THE RAMP, AS WELL AS MASK THE SEVERITY OF THE UNDERLYING ICE WERE SUBSTANTIAL FACTORS TODAY. AS WELL, I FELT THE BRAKING ACTION RPT WAS CLRLY INACCURATE AS I WATCHED SEVERAL PEOPLE NEARLY FALL ON THE RAMP, INCLUDING MYSELF, AFTER WE HAD PARKED AT THE GATE. SUPPLEMENTAL INFO FROM ACN 574958: WE CONTINUED TO THE RAMP. ON MY POSTFLT INSPECTION IS WHEN I NOTICED THE DAMAGE TO THE L PROP. AS WE INSPECTED THE RAMP THERE WAS A SHEET OF ICE UNDERNEATH THE PACKED SNOW WHICH I FEEL WAS THE CAUSE OF THE INCIDENT.

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.