Apr 24, 2018
Accident
Substantial Pine Ridge, SD
Injuries3 minor
Phase of Flight-
ConditionsIMC
OperationFAR 135
Probable Cause
The airplane’s inadvertent encounter with severe icing conditions during descent, which resulted in structural icing, the pilot’s inability to maintain altitude, and an emergency landing. Contributing to the accident was an incomplete preflight weather briefing.
NTSB CEN18LA146