The local controller’s poor judgment in prioritization of their ground traffic ahead of their airborne traffic, that became a distraction and led to a loss of situational awareness resulting in a near midair collision. Contributing to the incident was the controller in charge’s ineffective oversight.

A total loss of engine power due to the failure of the bolts that held in place the connecting rods to the engine's No. 3 and No. 4 cylinders as a result of the engine overhaul facility's improper installation of the bolts during a recent overhaul.

Physical incapacitation of the pilot from improper handling of a pesticide.