via.kdvr.com
Pilot in the South Dakota plane crash took off in limited visibility, NTSB says
SOUTH DAKOTA -- The pilot of the plane that crashed and left nine dead in South Dakota took off with limited visibility in snowy and turbulent weather, according to a news release from the National Transportation Safety Administration. The pilot initially filed with the FAA a plan with instrument flight rules (IFR), which describe how an aircraft operates when a pilot is unable to navigate with visual references. Visibility around the time of takeoff was about half a mile, with moderate snow and icing, along with overcast skies and turbulent conditions, the NTSB said Monday.