NTSB

The pilot’s poor in-flight planning to make an off airport precautionary landing and his failure to maintain clearance from the construction equipment during the landing roll. Contributing to the accident was the construction equipment.

The oil starvation and failure of the number one piston connecting rod and bearing that was due to the fragmentation of the number two main bearing, which then obstructed the engine oil pickup tube and restricted the flow of oil through the engine.

The pilot’s poor fuel management.

A fracture and collapse of the main landing gear. Contributing to the accident was an inadequate annual inspection by maintenance personnel and corrosion.

The loss of engine power for undermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.

The pilot’s failure to maintain control of the airplane during an aborted landing.

Fuel exhaustion due to the pilot’s inadequate in-flight planning and his failure to refuel while en route.

The mechanic’s failure to secure the right engine cowling fasteners. Contributing to the incident was the pilot’s inadequate preflight inspection.

The pilot’s failure to perform the emergency landing gear extension procedure prior to landing. A contributing factor in the accident was the failure of the electrical system.