History of Flight
On 21 April 2007, a Bell 206 B3 helicopter, registration ZS-RIF, departed Lanseria International Aerodrome (FALA) at 1312Z on a private flight. The pilot, a 65-year-old British-South African male holding a private pilot licence for helicopters and aeroplanes, had 497.6 total flying hours, including 99.5 hours on the Bell 206 type. The flight proceeded to the Hartbeespoort Dam area, then to the Johannesburg Central Business District, and onward to Sandton City. From there, the pilot turned north toward a quarry south of Grand Central Aerodrome (FAGC) to conduct multiple training exercises in an open field, including quick stops, hovering, and touch-and-goes.
According to the pilot, after landing without shutting down, he tightened the flight control friction locks, drank a cold drink, then loosened all friction locks and began his exercises. While hovering in ground effect, the helicopter started to yaw left. The pilot corrected, but then the helicopter yawed violently to the right and began rolling right. He applied left rudder pedal and left cyclic, but the next thing he recalled was hanging in the helicopter from his four-point harness.
A witness observed the helicopter hovering two to six metres above ground level. The nose pitched up and the aircraft began moving backward (reversing), then suddenly flipped over. The witness, stopped about 400 metres north of the site, helped the pilot to safety and switched off the running engine.
Injuries to Persons
The pilot sustained minor injuries and was admitted to hospital overnight for observation. No other persons were on board. No fatalities occurred.
Damage to Aircraft
The helicopter was destroyed. Substantial damage was noted to the main rotor blades, main rotor mast, transmission platform, airframe, tail boom, and tail rotor blades. Components such as the transmission gearbox, engine intake cowling, and main rotor mast separated and were found at distances up to 8 metres from the wreckage.
Wreckage and Impact Information
Ground scars indicated that the tail stinger and both left and right landing gear made initial contact with the ground. The helicopter then rolled to the left and came to rest facing the opposite direction, approximately 15 metres from the first point of contact. The main rotor mast failed 10–15 cm from the hub attachment point. The engine was examined and showed rotational signatures, confirming it was operating during impact. No pre-impact failures were found in the airframe or engine systems.
Probable Cause
The pilot lost control of the aircraft during an attempted reversing exercise, resulting in the helicopter rolling over and impacting with the ground.