What happened
On the afternoon of 15 April 2014, a solo flight training session ended in a fatal accident near Blouberg Farm, Cape Town. The pilot, a 22-year-old commercial pilot undergoing specialized training, was practicing aerial application maneuvers in a Magni Gyro M16, registration ZU-EDB.
Earlier that morning, the pilot had completed successful dual instruction with an instructor, practicing low-level turns at approximately 100m AGL. However, during a solo afternoon session intended to repeat these exercises, the aircraft entered a stall while performing a downwind turn. The aircraft struck the ground and was immediately consumed by a post-impact fire. Local fire services, operating in the area, discovered the burning wreckage and were able to extinguish the flames, but the pilot had sustained fatal injuries.
The investigation
An investigation by the SACAA AIID examined the aircraft's maintenance records, the pilot's training progress, and the environmental conditions at the time of the crash. The investigation confirmed that ZU-EDB was airworthy and had a valid authority to fly, with no recorded mechanical defects prior to the accident.
The inquiry focused on the pilot's training status, noting that while the pilot held a commercial license, he had only accumulated 11.3 hours on this specific aircraft type. The investigation also analyzed the flight path, which involved using farm fence poles as visual markers for application runs. Meteorological data indicated a 16-knot wind from the south, which created a tailwind component during the critical downwind turn.
Findings
- The aircraft was being operated outside of the safe performance envelopes established by the manufacturer.
- The pilot lacked sufficient experience on both the specific aircraft type and the complexities of aerial application operations.
- The flight manual's warnings regarding unusual maneuvers and specific height-velocity limitations were not adhered to.
- The presence of a tailwind during the downwind turn contributed to the loss of lift.
- Poor technique and airmanship were identified as the primary cause of the stall.
Safety action
Following the investigation, recommendations were made for the Director of Civil Aviation to review the approval of the Magni Gyro for agricultural use, given the risks associated with operating outside manufacturer recommendations. Additionally, a review of the Approved Training Organization's (ATO) protocols for this specific aircraft type was suggested.