What happened
The aircraft was established on final approach when it encountered a significant change in wind conditions. A right crosswind of 14 to 16 knots with a 30-degree angle was present at the time. As the aircraft passed below the height of nearby buildings situated in the windstream, the pilot experienced an immediate loss of the headwind component. This sudden reduction in airspeed and lift potential occurred without any corrective action being taken by the pilot to add power.
Consequently, the aircraft settled onto the ground short of the runway threshold. Upon impact, the right landing gear struck a ditch along the approach path. The force of this impact caused the aircraft to swerve sharply to the right. The resulting side load placed excessive stress on the left landing gear, causing it to collapse under the strain.
The investigation
The physical examination of the wreckage confirmed the sequence of events described in the narrative. The right landing gear was found damaged due to contact with the ditch, which initiated the swerving motion. The left landing gear sustained structural failure consistent with a severe side-load impact rather than a vertical compression failure. No mechanical anomalies were reported that would have contributed to the incident prior to the ground contact.
Findings
The primary factor contributing to this accident was the pilot's failure to maintain adequate airspeed during a critical phase of flight. The loss of headwind component due to terrain-induced wind shear required immediate power application, which did not occur. This resulted in the aircraft descending below the intended glide path and landing short of the runway. The subsequent impact with the ditch and the resulting asymmetric loading led to the collapse of the left landing gear.
Safety message
Pilots operating in environments with significant terrain features should be aware of potential wind shear effects, particularly on final approach. A sudden loss of headwind component can rapidly reduce airspeed and lift. It is critical to monitor airspeed closely and apply power promptly when flying below the height of surrounding obstacles in crosswind conditions to prevent undershooting the runway.