Jan 28, 2004
Accident
Substantial Rigby, ID
Injuries2 serious
Phase of Flight-
ConditionsIMC
OperationFAR 091
Probable Cause
The flight instructor's failure to follow procedures, i.e., operating the non-icing certified aircraft in known icing conditions contrary to the pilot operators handbook which resulted in ice accretion and ultimately a stall and loss of control in flight. Contributing factors were the icing conditions and degraded aircraft performance.
NTSB SEA04LA038