Accident Overview
On December 1, 2000, at 1010Z, a Beech V35B aircraft (registration ZS-IBG) was on a private flight from New Tempe Aerodrome (FATP) to Volksrus Aerodrome (FAVU). The pilot, who held a valid private pilot license with 1,025 total flying hours (221 hours on type), was accompanied by one passenger.
Sequence of Events
Approximately 40 nautical miles inbound to Volksrus, the pilot experienced an electrical failure. As a result, he was unable to extend the landing gear or flaps using normal electrical systems. Upon arrival, he manually lowered the gear using the emergency extension system. Contacting a friend via cell phone, the pilot received verification that the gear appeared extended. He then performed a flap-less approach and landed on Runway 10.
About 90 meters after touchdown, the right main landing gear collapsed, followed by the left main and nose gear. The aircraft skidded on its belly and veered off the right side of the runway, sustaining minor damage to the belly and propeller. No injuries were reported.
Post-Accident Actions
After the accident, a different battery and a serviceable propeller were fitted. The aircraft was subsequently flown to Wonderboom without further incident, and all electrical indications were normal. The voltage regulator, which had previously caused electrical issues, was tested and found to operate satisfactorily. No other electrical faults were identified.
Probable Cause
The cause for the electrical failure could not be determined. The collapse of the landing gear indicated that the gear was not driven into the proper down-lock position; however, whether this resulted from incorrect rigging or pilot action in failing to fully extend the gear could not be established with certainty.