Narrative:

The captain taxied on [taxiway] at the direction of ground control. We were on centerline and the right main hit an unseen snow drift causing the aircraft to slide right and stop. The engine shut down on its own; shut down by snow ingestion.

Google
 

Original NASA ASRS Text

Title: B737 First Officer reports hitting an unseen snow drift during taxi out causing the aircraft to slide right and the right engine to shut down due to snow ingestion.

Narrative: The Captain taxied on [taxiway] at the direction of Ground Control. We were on centerline and the right main hit an unseen snow drift causing the aircraft to slide right and stop. The engine shut down on its own; shut down by snow ingestion.

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.