The Australian Transport Safety Bureau has released its final investigation report into the tragic helicopter crash that claimed two lives near Point Lonsdale in 2022, revealing critical mechanical failure as the primary cause.
Investigation Details and Findings
The fatal accident occurred on October 21, 2022, when a Bell 206L-1 helicopter, registered VH-ZSV, crashed into shallow waters near Point Lonsdale shortly after takeoff from Barwon Heads. Both occupants - experienced pilot John Dawson, 69, of Geelong, and his passenger John McAllister, 73, from Ocean Grove - tragically lost their lives in the incident.
According to the comprehensive ATSB investigation, the helicopter experienced an in-flight break-up of its main rotor system just moments after becoming airborne. The investigation determined that a fatigue crack in the main rotor spindle initiated the catastrophic sequence of events that led to the aircraft's destruction.
The fracture likely originated from pre-existing damage that went undetected during maintenance, the report states. This critical failure caused the main rotor blades to separate from the aircraft, rendering the helicopter uncontrollable and leading to the immediate crash into Port Phillip Bay.
Sequence of Events and Emergency Response
The helicopter had departed from Barwon Heads Airport on what was intended to be a routine flight. Witnesses reported seeing the aircraft climb to approximately 200 feet before unusual noises were heard, followed by the separation of rotor components. The helicopter then descended rapidly into the water near the Point Lonsdale lighthouse.
Emergency services responded immediately to the scene, with water police and local rescue crews recovering both men from the wreckage. Despite their prompt efforts, both occupants were pronounced deceased at the scene. The crash site was secured for investigation, with the ATSB deploying a team of transport safety investigators to begin their detailed analysis.
Safety Recommendations and Industry Impact
The ATSB's final report includes important safety recommendations for helicopter operators and maintenance organizations. Investigators emphasized the need for enhanced inspection protocols for critical rotor system components, particularly for aircraft of similar age and service history.
This investigation has significant implications for the Australian aviation industry, especially operators of Bell 206 series helicopters. The findings have been shared with the manufacturer and international aviation safety authorities to contribute to global safety improvements.
The ATSB has now closed its investigation into this tragic accident, with the comprehensive final report serving as both a tribute to the victims and a crucial document for preventing similar incidents in the future. The bureau extends its condolences to the families and friends of both men affected by this devastating crash.
