Incident Overview
On 10 November 2014, a Robinson R44 helicopter, registered as ZS-RRW, was involved in an incident near Ladysmith in KwaZulu-Natal Province, South Africa. The aircraft was operating under private Part 91 regulations on a flight from Virginia Aerodrome (FAVG) to Vanderbijlpark Aerodrome (FAVP). The pilot-in-command, a 54-year-old male with a valid private licence, was accompanied by one passenger.
Flight History and Sequence of Events
During the cruise phase after passing Ladysmith, the passenger reported feeling unwell. In response, the pilot decided to execute a precautionary landing in an open field. The helicopter landed hard, resulting in significant impact forces. This caused the main rotor blades to strike the tail boom and resulted in damage to the skids, vertical stabiliser, and tail rotor skid. Despite the substantial damage to the airframe, both occupants remained uninjured due to proper restraint by safety harnesses.
Investigation Findings
The investigation determined that there were no mechanical faults with the helicopter prior to the incident. The probable cause was identified as the pilot's failure to maintain rotor rpm, leading to an uncontrolled descent and a hard landing. Contributing factors included the pilot's distraction caused by the passenger's sudden illness. The analysis suggested that the pilot may have approached with high rpm or used incorrect handling techniques, causing the aircraft to descend rapidly and lose control upon impact.
Aircraft and Environmental Conditions
The Robinson R44 (serial number 1342) had 2,287.4 airframe hours at the time of the incident. Weather conditions were favorable, with CAVOK visibility, a temperature of 23°C, and light winds. The helicopter was recovered to an approved maintenance facility at Lanseria Aerodrome for repairs.