What happened
The incident occurred during the initial phase of flight. While the aircraft was accelerating down the runway for departure, the main cabin door unexpectedly opened. This mechanical failure necessitated an immediate abort of the takeoff roll, and the pilot initiated a return to the airport for landing.
Upon entering the traffic pattern, the pilot noted that the airspeed was higher than expected relative to the flap configuration. To manage the speed, he applied significant back pressure on the control column. During the final approach and flare, the pilot applied additional back pressure in an attempt to arrest the descent rate. This input resulted in an uncontrollable descent. The aircraft impacted the runway surface, causing the nosewheel and propeller to strike the ground.
The investigation
The investigation focused on the sequence of events leading to the impact. Examination of the flight data and pilot statements confirmed that the primary deviation from normal operations was caused by the door opening during the takeoff roll. The subsequent handling of the aircraft during the return landing involved high airspeed management, which contributed to the final impact dynamics.
Findings
Several factors contributed to the outcome of this event. The initial failure of the main cabin door to remain secured during the high-energy takeoff phase was the primary trigger for the aborted departure. During the subsequent landing attempt, the pilot's decision to maintain a fast airspeed with flaps set and apply excessive back pressure led to a loss of control authority in the flare. This resulted in a hard landing where structural components, specifically the nosewheel and propeller, sustained damage from ground contact.
Safety message
Pilots should be aware that door latches can fail or open during high-vibration phases such as takeoff. Immediate recognition and execution of emergency procedures are critical. Additionally, airspeed management during approach is vital; flying too fast with insufficient flap extension requires careful control input to avoid loss of pitch authority during flare.