Incident Overview
A pilot reported an electrical system failure during flight. Despite following emergency procedures to restore power, the pilot was unable to regain electrical system functionality. The pilot then manually extended the landing gear using 30 pumps of the emergency hand pump handle, at which point the pilot heard and felt indications that the landing gear was deployed.
Landing and Collapse
Choosing to land on a nearby grass runway, the pilot touched down approximately 1,800 feet from the threshold of the 3,700-foot runway. During the landing roll, the right main landing gear collapsed, causing the airplane to veer off the right side of the runway.
Post-Accident Observations
After the accident, the master switch was turned on and electrical power was available to raise and lower the flaps. During subsequent repairs to the airplane following the accident, no maintenance was performed or required to the electrical system or the right main landing gear assembly.
Emergency Procedures Reference
According to the airplane information manual's emergency procedures section, the emergency hand pump is intended to be pumped until resistance becomes heavy, which occurs after about 35 cycles.