Accident Summary
On Monday 12 September 2016, a Eurocopter AS350-B2 (registration ZK-HYY) operated by The Helicopter Line departed Queenstown for a tourist flight with a snow landing. The initial destination was Mount Vanguard, but the pilot diverted to Mount Sale due to weather. During the approach to a landing site at about 1,500 metres elevation, the helicopter experienced a sudden increase in descent rate. The pilot initiated a go-around, but the helicopter struck the ground with its landing gear and main rotor blades, coming to rest on its left side. One passenger sustained a minor knee injury. The helicopter was substantially damaged.
Investigation Findings
The Transport Accident Investigation Commission (TAIC) determined that the helicopter was within weight and balance limits, the engine was delivering high power, and the helicopter was operating normally. The pilot had the required training and experience. The approach was made with a tailwind when the pilot expected a crosswind. The pilot executed a relatively fast, low, and close approach, which may not provide sufficient time to confirm wind conditions or ensure escape routes remain usable. The investigation found no pre-accident technical anomalies.
Safety Issues and Recommendations
TAIC identified a safety issue: the operator had experienced four serious landing accidents in three years, with inconclusive causal factors. The Commission recommended that The Helicopter Line's chief executive, in consultation with the New Zealand Civil Aviation Authority, review the operator's safety management system audit process to ensure sound safety policy, assurance, risk management, and promotion.