Incident Details
A training flight was in progress with a flight instructor supervising a student pilot. The instructor directed the student to perform a normal takeoff. During the maneuver, the instructor maintained a light grip on the controls to monitor and guide the student's actions.
Sequence of Events
As the takeoff proceeded, the student suddenly moved the cyclic control to the left. The helicopter immediately responded by rolling to the left. The instructor attempted to counteract the input by applying opposite cyclic, but the student's force could not be overcome in time. The helicopter continued rolling until it came to rest on its left side.
Investigation Findings
A post-incident examination of the helicopter revealed no mechanical failures or malfunctions. All systems were found to be operating correctly, and no evidence of pre-existing defects was identified.