NTSB Accidents

Probable Cause: The mechanic’s failure to properly secure the oil suction screen plug during recent maintenance, which resulted in an oil leak and subsequent loss of engine power due to oil starvation.

Probable Cause: The pilot’s improper landing flare and hard landing, which resulted in the left axle fracturing from bending overstress.

Probable Cause: The pilot’s failure to maintain adequate airspeed while maneuvering at low altitude, which resulted in an exceedance of the airplane’s critical angle of attack and a subsequent aerodynamic stall.

Probable Cause: The total loss of engine power due to the fatigue failure of the crankshaft accessory drive gear.

Probable Cause: The pilot’s exceedance of the airplane’s critical angle of attack and failure to maintain adequate airspeed, which resulted in an aerodynamic stall and loss of control.

Probable Cause: A loss of engine power due to the formation of carburetor ice that resulted from the pilot’s delayed use of carburetor heat during the landing approach.

Probable Cause: The pilot’s failure to maintain control of the airplane while initiating a low-altitude aerobatic maneuver, which resulted in impact with trees and terrain. Contributing to the accident was the pilot’s high-risk behavior.

Probable Cause: The premature retraction of the flaps by the student pilot, while just above the airplane’s stall speed. Contributing to the accident was the flight instructor’s inadequate supervision and failure to regain aircraft control from the student pilot.

Probable Cause: The pilot’s failure to properly adjust the propeller’s pitch angle, which resulted in a loss of thrust and an inability to maintain altitude.