Incident Sequence
The pilot completed the landing and allowed the aircraft to roll out to the intersection of runways 32 and 23, where he intended to turn off the active runway. Upon reaching the intersection, the right landing gear collapsed—meaning it retracted—and the aircraft skidded to the right. The aircraft came to a stop in the intersection. Subsequently, the left landing gear also collapsed.
Examination Findings
Later, the aircraft was placed on jacks, and the landing gear was pumped down. An examination revealed no evidence of a mechanical problem, except sand was found in the hinge area of the landing gear. Reportedly, the sand would have prevented the landing gear from properly locking in the down position.
Summary of Facts
No mechanical defects other than sand contamination were identified. The sand in the hinge area is believed to have interfered with the locking mechanism, though the source does not explicitly state this as the cause. The aircraft was moved after the incident, and no other contributing factors were noted.