Accident
On 11 August 2002, at approximately 0915Z, a Robinson R-22 helicopter, registration ZS-RHF, was involved in an accident at Lanseria Airport (FALA) during a private flight. The pilot and one passenger were on board, and neither sustained injuries. The helicopter came to rest on its left side after rolling over.
The planned flight was from Lanseria to Kroonstad for fuel uplift, then onward to Bultfontein. Prior to departure, 43 liters of fuel were added, with the main fuel tank indicating three-quarters full and the auxiliary tank indicating one-quarter full.
During an attempted power check, the helicopter lifted into a hover. The low rotor RPM audio warning activated, prompting the pilot to land back. A second attempt to become airborne again triggered the low rotor RPM warning. While airborne, the helicopter tracked sideways, leading to a hard landing where the skid gear struck an embankment beside the taxiway. The aircraft then rolled onto its left-hand side.
Emergency personnel responded; no injuries were reported among the occupants.
Investigation
The South African Civil Aviation Authority investigated the accident. The pilot held a private pilot license valid at the time, with 147.5 total flying hours, all on the Robinson R-22. Weather conditions were reported as fine: wind from 270° at 5 knots, temperature 22°C.
Probable Cause
The aircraft's maximum certified take-off weight was exceeded during the attempted flight, resulting in exceeding the power available to conduct a safe take-off within the performance flight operating limitations of the aircraft.