What happened
Following departure from the runway, the flight instructor experienced a sudden power surge accompanied by a yawing motion. The instructor was unable to determine which engine was malfunctioning at the time of the event. After verifying that all engine controls were in the proper positions, the instructor took control of the aircraft from the student pilot.
In an attempt to maintain altitude, the instructor retracted the landing gear to reduce aerodynamic drag and continued the climb. However, the airspeed began to decay toward the minimum controllable airspeed. Consequently, the instructor elected to perform a forced landing. The aircraft sustained substantial damage during the landing sequence.
The investigation
A post-accident examination of the aircraft was conducted to identify any mechanical discrepancies. The inspection revealed no evidence of mechanical failure or malfunction in the engines or related systems.