Narrative:

Following an uneventful flight, visual approach, and landing to runway 6L at day, the captain slowed the aircraft on the runway to taxi speed and began a right turn onto taxiway Z. About 2/3 the way through the turn I felt the aircraft lurch forward and realized we were sliding. The captain cycled the brakes, then applied thrust reversers in an effort to stop the aircraft. The aircraft slid straight ahead off the taxiway between taxi lights into an open area of snow-covered grass. The tower was notified and we elected to call for a tug rather than taxi out of the grass, as we could not determine what might be hidden under the 3 inches of fresh snow. Airport operations vehicles arrived a short time later, and we observed them slide on the taxiway as well. Sand trucks were dispatched and treated the area before the tub arrived. Another aircraft landed a few mins after us on the same runway and exited another taxiway and reported that braking action was poor to nil there as well. ATIS was received prior to the visual approach, and there was no mention of braking advisories. The runway and associated txwys appeared to have been plowed recently, and appeared to be mostly clear with a few patches of thin snow. On further inspection of taxiway Z, the pavement was covered by a thin layer of clear ice. An airport operations worker offered the opinion that the taxiway had been plowed an hour or so previously, but the sun had come out and may have helped to melt some of the snow, which then refroze. No injuries or damage were caused during this event. Our taxi speed was appropriate for the perceived conditions. Additional checks by the airport vehicles of the txwys might have prevented this occurrence.

Related reports:

Google
 

Original NASA ASRS Text

Title: A BE40 CREW, AFTER LNDG AT DAY, WERE UNABLE TO NEGOTIATE THE EXIT, SLIDING OFF THE TXWY.

Narrative: FOLLOWING AN UNEVENTFUL FLT, VISUAL APCH, AND LNDG TO RWY 6L AT DAY, THE CAPT SLOWED THE ACFT ON THE RWY TO TAXI SPD AND BEGAN A R TURN ONTO TXWY Z. ABOUT 2/3 THE WAY THROUGH THE TURN I FELT THE ACFT LURCH FORWARD AND REALIZED WE WERE SLIDING. THE CAPT CYCLED THE BRAKES, THEN APPLIED THRUST REVERSERS IN AN EFFORT TO STOP THE ACFT. THE ACFT SLID STRAIGHT AHEAD OFF THE TXWY BTWN TAXI LIGHTS INTO AN OPEN AREA OF SNOW-COVERED GRASS. THE TWR WAS NOTIFIED AND WE ELECTED TO CALL FOR A TUG RATHER THAN TAXI OUT OF THE GRASS, AS WE COULD NOT DETERMINE WHAT MIGHT BE HIDDEN UNDER THE 3 INCHES OF FRESH SNOW. ARPT OPS VEHICLES ARRIVED A SHORT TIME LATER, AND WE OBSERVED THEM SLIDE ON THE TXWY AS WELL. SAND TRUCKS WERE DISPATCHED AND TREATED THE AREA BEFORE THE TUB ARRIVED. ANOTHER ACFT LANDED A FEW MINS AFTER US ON THE SAME RWY AND EXITED ANOTHER TXWY AND RPTED THAT BRAKING ACTION WAS POOR TO NIL THERE AS WELL. ATIS WAS RECEIVED PRIOR TO THE VISUAL APCH, AND THERE WAS NO MENTION OF BRAKING ADVISORIES. THE RWY AND ASSOCIATED TXWYS APPEARED TO HAVE BEEN PLOWED RECENTLY, AND APPEARED TO BE MOSTLY CLR WITH A FEW PATCHES OF THIN SNOW. ON FURTHER INSPECTION OF TXWY Z, THE PAVEMENT WAS COVERED BY A THIN LAYER OF CLR ICE. AN ARPT OPS WORKER OFFERED THE OPINION THAT THE TXWY HAD BEEN PLOWED AN HR OR SO PREVIOUSLY, BUT THE SUN HAD COME OUT AND MAY HAVE HELPED TO MELT SOME OF THE SNOW, WHICH THEN REFROZE. NO INJURIES OR DAMAGE WERE CAUSED DURING THIS EVENT. OUR TAXI SPD WAS APPROPRIATE FOR THE PERCEIVED CONDITIONS. ADDITIONAL CHKS BY THE ARPT VEHICLES OF THE TXWYS MIGHT HAVE PREVENTED THIS OCCURRENCE.

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.