What happened
On 8 September 2013, an MTO Sport autogyro, registration ZU-RGL, was conducting a private game surveillance flight near Klipplaat farm, near Brits, North West. The flight departed from a private airstrip on the farm with the intention of monitoring local wildlife and returning to the same location.
After climbing to approximately 800ft above ground level, the pilot and passenger spotted several animals. While maneuvering the aircraft to gain a better view of the wildlife, the pilot reported experiencing a sudden, severe downdraft. Despite applying full power, the aircraft was unable to maintain its altitude. The pilot attempted to level the aircraft to avoid an imminent collision with tall trees, but the autogyro struck small trees and overturned onto its right side. The pilot sustained minor injuries, while the passenger remained unhurt. The aircraft suffered substantial damage to its rotor blades, fuselage, windshield, and underbelly.
The investigation
An investigation by the SACAA AIID examined the wreckage and the circumstances surrounding the flight. Investigators reviewed the aircraft's maintenance records, which showed that ZU-RGL had been maintained according to manufacturer procedures and was in a serviceable condition. The engine and propeller were found to be free of any pre-impact deficiencies.
Meteorological data from nearby aerodromes indicated clear flying conditions with no significant weather hazards. While the pilot initially attributed the loss of altitude to a sudden downdraft, investigators determined that such a phenomenon was unlikely, as there were no developing thunderstorms or rising terrain in the area that could have produced such an effect.
Findings
- The investigation established that the pilot was distracted by watching animals on the ground while maneuvering the aircraft at a low altitude.
- Due to this diverted attention, the pilot failed to monitor and maintain the necessary airspeed.
- The loss of altitude was a result of poor airmanship and the failure to concentrate on flight controls rather than the ground activity.
- The aircraft was fully functional and had sufficient fuel for the duration of the 45-minute flight.