NTSB

The pilot’s failure to maintain control of the airplane during final approach to land, which resulted in an exceedance of the airplane’s critical angle of attack, aerodynamic stall, and collision with a fence and terrain.

The loss of engine power due to fuel exhaustion.

A total loss of engine power due to carburetor icing, which resulted from the pilot’s failure to use carburetor heat while operating in conditions conducive to the formation of carburetor ice.

Total loss of engine power due to the improper installation of an electronic ignition system connector plug.

The pilot’s exceedance of the airplane’s critical angle of attack during a missed banner pickup, which resulted in an aerodynamic stall/spin and loss of control at an altitude too low to recover.

The non-instrument rated pilot’s decision to commence the flight in instrument meteorological conditions, which resulted in spatial disorientation and a subsequent loss of airplane control. Contributing to the accident was the pilot’s self-induced pressure to initiate the flight.

Maintenance personnel’s failure to follow the avionics installation guidance for the oil pressure sensor, which resulted in the high-cycle fatigue failure of a line, oil starvation, and the subsequent loss of engine power. Contributing to the accident was the pilot’s failure to perform an adequate preflight inspection of the airplane.

A blockage of the fuel filter inlet by a piece of debris, which resulted in fuel starvation and a total loss of engine power.