Landing Gear Collapse During Touch-and-Go Practice (N615Q)

What happened

The pilot was conducting practice touch-and-go landings when the aircraft's landing gear collapsed during the landing phase. The pilot reported that the gear failed to remain extended upon touchdown.

The investigation

Post-accident examination of the aircraft revealed damage to the landing gear doors, indicating the gear was in transit at the time of impact. Investigators found that the landing gear circuit breaker had tripped or "popped." Despite this electrical interruption, a thorough inspection of the landing gear system failed to reveal any mechanical failure or malfunction that would have prevented normal operation.

Findings

The collapse occurred while the aircraft was in the process of retracting or extending its gear, likely due to the circuit breaker opening. The absence of mechanical defects suggests the issue was electrical rather than structural.