Brasilia EMB-120 All Series
Flight Crew Flight Instructor; Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 90; Flight Crew Total 4600; Flight Crew Type 500
Ground Excursion Runway; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Airport; Human Factors; Weather
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.
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.