What happened
On 28 July 2007, a solo training flight departed from Kimberley Aerodrome (FAKM) in the Northern Cape. The pilot was operating a Robinson R22, registration ZS-RRF, heading toward the Kimberley General Flying Area. During the return leg of the flight, the helicopter struck high-tension electrical cables spanning the Vaal River. The impact caused the aircraft to flip, severing the tail boom, before it plunged into the river. The aircraft subsequently submerged in the water, where the wreckage was later located. Although the wreckage was found shortly after the disappearance, the pilot's body did not surface until August 2008, at which point the cause of death was determined to be multiple injuries.
The investigation
An investigation by the South African Civil Aviation Authority (SACAA) examined the wreckage and the pilot's flight history. The investigation confirmed that the Robinson R22 was airworthy and had been maintained according to all regulatory requirements. An inspection of the engine by a maintenance organization found no mechanical anomalies or defects that could have contributed to the accident. Meteorological data indicated clear skies and favorable visibility at the time of the event. The investigation also reviewed the pilot's credentials, noting that the pilot was correctly licensed and held a valid medical certificate. Toxicology reports confirmed the absence of alcohol or drugs in the pilot's system.
Findings
- The primary cause of the accident was the collision between the aircraft and high-tension power lines.
- The pilot was flying at a low altitude, which prevented the timely identification of the overhead hazard.
- The investigation noted that the pilot had completed 6.3 flying hours on the day of the accident, suggesting that fatigue may have been a contributing factor.
- The impact with the wires and the subsequent water submersion resulted in the total destruction of the aircraft.