NTSB

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.

The pilot’s failure to use carburetor heat during the approach and his unsuitable flight profile for an upsloping runway, which resulted in a partial loss of engine power and an impact with terrain during an attempted go-around.

Pilot’s failure to maintain clearance from a forklift while taxiing.

The pilot’s delay in initiating a go-around and his failure to maintain airplane control during the initial climb, which resulted in the exceedance of the airplane’s critical angle of attack and an aerodynamic stall.

The pilot’s failure to maintain an appropriate altitude above obstacles, which resulted controlled flight into a powerline.