Event Overview
A pilot experienced landing gear indicator problems on several previous flights, though no gear failure occurred. On the accident flight, an unsafe condition arose, and as the airplane rolled out, the left landing gear retracted. The airplane subsequently veered off the left side of the runway.
Findings
Examination revealed that the over-center lock was unlocked. Investigators determined there was no mechanical reason for the gear retraction. The runway condition was described as rough, with several potholes present. The manufacturer stated that the landing gear may inadvertently retract during operation on rough terrain.
The pilot had reported previous landing gear indicator issues, but those did not involve actual gear failure. No mechanical defects were identified that could explain the retraction on this flight. The rough runway surface, including potholes, appears to be a significant operational condition.
Additional Details
No information was provided regarding the aircraft type, registration, operator, number of occupants, injuries, or damage. The time of day, weather conditions, and whether air traffic control was involved are not specified. The investigation did not assign a probable cause, but the manufacturer's advisory regarding rough terrain operations was noted.