Emb-120 first officer experiences a runway excursion during taxi due to icy conditions. The slide is...

Attributes
ACN	1246010
Time
Date	201503
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 90 Flight Crew Total 4600 Flight Crew Type 500
Events
Anomaly	Ground Excursion Runway Inflight Event / Encounter Loss Of Aircraft Control

Narrative:

We were making a slow taxi out from the terminal to the favorable runway. We had the ASOS weather and had received our clearance to depart and pick up our IFR flight plan enroute. I had completed the taxi and before takeoff checklists when we were headed south on the taxiway paralleling the runway. This taxiway ended at [an adjacent] runway where we started to make a right hand turn towards [our] runway. As we started to turn; the captain said out loud that we were sliding. We were turning towards the right but we were sliding more towards the edge of the runway. At this time I said to put the power levers into reverse and I realized that the captain had already done so and the engines were spooling up to produce reverse thrust. It was not enough as we slid towards the edge of [the adjacent] runway and finally came to a stop at a 45 degree angle as the left main wheels had come in contact with the snow bank on the side of the runway. I did not hear any unusual sounds or feel any unusual feelings as we came to a stop.

Original NASA ASRS Text

Title: EMB-120 First Officer experiences a runway excursion during taxi due to icy conditions. The slide is eventually stopped by the snow berm at the edge of the runway.

Narrative: We were making a slow taxi out from the terminal to the favorable runway. We had the ASOS weather and had received our clearance to depart and pick up our IFR flight plan enroute. I had completed the TAXI and BEFORE TAKEOFF checklists when we were headed south on the taxiway paralleling the runway. This taxiway ended at [an adjacent] runway where we started to make a right hand turn towards [our] runway. As we started to turn; the Captain said out loud that we were sliding. We were turning towards the right but we were sliding more towards the edge of the runway. At this time I said to put the power levers into reverse and I realized that the Captain had already done so and the engines were spooling up to produce reverse thrust. It was not enough as we slid towards the edge of [the adjacent] runway and finally came to a stop at a 45 degree angle as the left main wheels had come in contact with the snow bank on the side of the runway. I did not hear any unusual sounds or feel any unusual feelings as we came to a stop.

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.

Emb-120 first officer experiences a runway excursion during taxi due to icy conditions. The slide is eventually stopped by the snow berm at the edge of the runway.