Flight crew taxiing on slippery taxiway, slid off cleared surface during turn.

Attributes
ACN	496094
Time
Date	200012
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cyyz.airport
State Reference	ON
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cyyz.tower
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 85 flight time total : 4900 flight time type : 370
ASRS Report	496094
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : regained aircraft control other
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance

Narrative:

Taxiing out for takeoff at toronto, canada, winds were 270 degrees at 19 KTS gusting to 25 KTS. Taxiing out to runway 23, while making a 90 degree turn from taxiway a to taxiway H, about 1/2 way through turn, the nose gear started to slide and the aircraft slid about 3 ft off the cleared taxiway. We remained on hard surface, but needed assistance to move the aircraft. Airport personnel cleared snow from in front of the aircraft, a mechanic looked the plane over for damage and the mechanic used a tug to pull us onto the taxiway. Once on the taxiway, we continued and departed for ord. Gusty winds caused a WX vane effect opposite the turn that helped cause the nose gear to start sliding.

Original NASA ASRS Text

Title: FLC TAXIING ON SLIPPERY TXWY, SLID OFF CLRED SURFACE DURING TURN.

Narrative: TAXIING OUT FOR TKOF AT TORONTO, CANADA, WINDS WERE 270 DEGS AT 19 KTS GUSTING TO 25 KTS. TAXIING OUT TO RWY 23, WHILE MAKING A 90 DEG TURN FROM TXWY A TO TXWY H, ABOUT 1/2 WAY THROUGH TURN, THE NOSE GEAR STARTED TO SLIDE AND THE ACFT SLID ABOUT 3 FT OFF THE CLRED TXWY. WE REMAINED ON HARD SURFACE, BUT NEEDED ASSISTANCE TO MOVE THE ACFT. ARPT PERSONNEL CLRED SNOW FROM IN FRONT OF THE ACFT, A MECH LOOKED THE PLANE OVER FOR DAMAGE AND THE MECH USED A TUG TO PULL US ONTO THE TXWY. ONCE ON THE TXWY, WE CONTINUED AND DEPARTED FOR ORD. GUSTY WINDS CAUSED A WX VANE EFFECT OPPOSITE THE TURN THAT HELPED CAUSE THE NOSE GEAR TO START SLIDING.

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.