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A330 captain reported sliding off a slippery; snow-covered taxiway while attempting to make a turn.
| Attributes | |
| ACN | 1412210 |
| Time | |
| Date | 201612 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A330 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 172 Flight Crew Total 20000 Flight Crew Type 2700 |
| Events | |
| Anomaly | Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Taxiway |
Narrative:
Taxiway excursion. Reported taxiways 1/8 inch dry snow; snow intensity increasing rapidly after landing; no braking action reports were available. After landing 100% snow reported; 1/8th inch dry snow. Initial turnoff at 5-8 knots but experienced momentary loss of steering and traction but was able to recover. Advised ground braking action was at best fair; all taxiways reported 1/8 inch dry snow. Approaching [the next] taxiway no ground markings visible; only taxi lights; [only] guidance available were the lights and where snow plow had been. Visibility was decreasing; winds picking up; and snow falling heavily! While entering [the] taxiway [I] lost steering and braking at 5 knots and 80 degrees of turn; attempted to roll out of turn and stop; [the] aircraft slid sideways 15 ft. Attempted to power up again but could not move. Shut down and called for tug. Initial ground crew showing up said they could see where I slid sideways approximately 15 feet. They also reported I was in the grass about 2 feet and about 9 inches down.
Original NASA ASRS Text
Title: A330 Captain reported sliding off a slippery; snow-covered taxiway while attempting to make a turn.
Narrative: Taxiway excursion. Reported taxiways 1/8 inch dry snow; snow intensity increasing rapidly after landing; No braking action reports were available. After landing 100% snow reported; 1/8th inch dry snow. Initial turnoff at 5-8 knots but experienced momentary loss of steering and traction but was able to recover. Advised Ground braking action was at best fair; all taxiways reported 1/8 inch dry snow. Approaching [the next] taxiway no ground markings visible; only taxi lights; [only] guidance available were the lights and where snow plow had been. Visibility was decreasing; winds picking up; and snow falling heavily! While entering [the] taxiway [I] lost steering and braking at 5 knots and 80 degrees of turn; Attempted to roll out of turn and stop; [the] aircraft slid sideways 15 ft. Attempted to power up again but could not move. Shut down and called for tug. Initial ground crew showing up said they could see where I slid sideways approximately 15 feet. They also reported I was in the grass about 2 feet and about 9 inches down.
Data retrieved from NASA's ASRS site 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.