NTSB

The uncertificated pilot’s failure to attain/maintain a proper angle-of-attack during an initial climb that resulted in an aerodynamic stall and subsequent impact with terrain.

The pilot’s failure to remove the seat belt used as a flight control lock from the aft cockpit control stick before takeoff, which resulted in a loss of control during takeoff and collision with terrain.

The mechanic’s failure to clean the oil suction screen during the most recent maintenance, which resulted in oil starvation and subsequent total loss of engine power.

The pilot’s improper decision to conduct an off-field precautionary landing.

The pilot’s improper decision to load the airplane beyond its allowable gross weight limits, which resulted in an impact with a tree and collision with terrain.

The pilot’s improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion and impact with terrain.

The pilot’s failure to remove an object from the airplane’s exterior, which impacted the propeller blades when he applied full power, causing them to fracture and damage the airplane.

The airplane builder’s improper installation of the lower right wing which resulted in an uncommanded left roll and the subsequent loss of control.