Icy taxiway, during 90 degree turn, nosewheel exited taxiway. Aircraft towed out of snow.

Attributes
ACN	325201
Time
Date	199601
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : day
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 15000 flight time type : 3000
ASRS Report	325201
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	incursion : landing without clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cause: extremely slippery txwys. On my second 90 degree turn at dayton international airport the nose of the aircraft continued to rotate for an additional 45 degrees. Forward motion continued with the aircraft nose being about 3 ft off the taxiway at a 45 degree angle. Differential braking was useless, however about 2 seconds of thrust reverse did help stop the aircraft. There was no damage to the aircraft or airport property. Since the ground was completely frozen '6 degrees F' the aircraft was easily pulled from its location and to the terminal.

Original NASA ASRS Text

Title: ICY TXWY, DURING 90 DEG TURN, NOSEWHEEL EXITED TXWY. ACFT TOWED OUT OF SNOW.

Narrative: CAUSE: EXTREMELY SLIPPERY TXWYS. ON MY SECOND 90 DEG TURN AT DAYTON INTL ARPT THE NOSE OF THE ACFT CONTINUED TO ROTATE FOR AN ADDITIONAL 45 DEGS. FORWARD MOTION CONTINUED WITH THE ACFT NOSE BEING ABOUT 3 FT OFF THE TXWY AT A 45 DEG ANGLE. DIFFERENTIAL BRAKING WAS USELESS, HOWEVER ABOUT 2 SECONDS OF THRUST REVERSE DID HELP STOP THE ACFT. THERE WAS NO DAMAGE TO THE ACFT OR ARPT PROPERTY. SINCE THE GND WAS COMPLETELY FROZEN '6 DEGS F' THE ACFT WAS EASILY PULLED FROM ITS LOCATION AND TO THE TERMINAL.

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.