What happened
On 13 June 2014, an Auto Gyro GmbH Calidus, registration ZU-RRP, was performing a private solo takeoff at Stellenbosch Airfield. After completing pre-rotation procedures and reaching 210 RPM, the pilot released the brakes and increased engine power. During the takeoff roll, the aircraft'_s nose pitched up abruptly, causing the tail section to strike the runway surface.
This impact led to a loss of directional control, causing the gyrocopter to veer left of Runway 01. As the aircraft moved off the runway, the main rotor blades made contact with the ground, resulting in one blade separating from the mast. The aircraft then entered a violent sequence of bouncing and flipping three times before coming to rest on its side. The pilot sustained serious injuries during the event.
The investigation
SACAA AIID investigators examined the wreckage and reviewed maintenance and flight records. The investigation confirmed that the Auto Gyro GmbH Calidus was airworthy, properly maintained, and within its weight and balance limits at the time of the accident. There was no evidence of mechanical failure, engine malfunction, or any technical defect in the aircraft's systems.
Witnesses at the airfield observed the aircraft accelerating rapidly before the pilot applied a sudden, sharp control input. Investigators also noted that while the weather was clear, the pilot had been working under significant pressure in the week preceding the accident and had not had adequate rest.