NTSB

The pilot’s exceedance of the airplane’s critical angle of attack, which resulted in an inadvertent aerodynamic stall while returning to the airport following a partial loss of engine power for reasons that could not be determined.

The pilot’s decision to continue the flight into an area of moderate to heavy icing conditions, which resulted in a degradation of airplane performance and subsequent loss of control.

The pilot’s inadequate fuel management which resulted in a total loss of engine power due to fuel starvation.

The failure of maintenance personnel to properly rig the rudder trim system after reinstallation and pilot’s inadequate preflight inspection after recent maintenance, which resulted in an inability to adequately maintain directional control during the flight.

The student pilot’s failure to maintain sufficient distance behind a jet airplane which, resulted in his loss of airplane control due to the jet airplane’s jet blast and the flight instructor’s delayed remedial action.

The pilot’s failure to lower the landing gear on approach due to distraction.