What happened
During a flight intended for tailwheel conversion training, a crew was practicing crosswind landing techniques and side-slipping maneuvers. While on final approach for the second crosswind landing, the student pilot executed a sideslip with the aircraft nose directed into the wind. This maneuver resulted in an opposite bank angle, leaving the upwind wing in a high position. As the aircraft type touched down while drifting, the right wing struck the ground. This impact triggered a nose-over, leaving the aircraft in an inverted position. No injuries were sustained by the crew, but the aircraft suffered extensive damage.
The investigation
SHK examined the sequence of the maneuver and the instructional context of the flight. The investigation focused on the technique used during the sideslip and the alignment of the aircraft relative to the wind during the approach. The investigation also reviewed the available training documentation to determine if the procedures used were supported by established manual instructions.
Findings
- The primary cause of the accident was that training manuals lacked detailed instructions regarding sideslip procedures.
- This lack of specific guidance led to the use of an unfavorable combination of techniques for managing both sideslips and crosswind landings.
- The instructor noted that the aircraft nose should remain pointed toward the wind during sideslips on final approach to prevent such outcomes.