Accident Narrative
During the landing rollout following a normal touchdown on the runway, the right main landing gear collapsed. Subsequently, directional control was lost, and the right wing struck the runway surface. The airplane veered off the runway and came to rest in an adjacent open dirt field.
Electrical System Events
During flight, the pilot experienced a low voltage condition, and radio communications became problematic as the battery gradually discharged. In accordance with instructions in the Cessna Pilot's Operator's Handbook, the pilot cycled the airplane's master electric system switch. As this did not restore electric power, the pilot reduced the electrical load to conserve energy.
Post-Impact Examination
No evidence of any mechanical malfunction was found during the post-impact examination of the landing gear and alternator/battery electric system. The alternator field circuit breaker was found in the tripped position. When the alternator circuit breaker was reset, electric current was restored to the bus and the battery was charging.
Pilot Actions
Prior to landing, the pilot failed to properly perform procedures relating to ensuring that the alternator circuit breaker was engaged. Additionally, the pilot failed to ensure that the landing gear was fully extended by using the emergency gear extension system.