Helicopter crash near Gunpowder
Deceased
Paul Carl Bielenberg, Thomas William Lancaster, Derek Victor Powell, Vita Mara Stott
Demographics
female
Date of death
2006-02-21
Finding date
2009-09-14
Cause of death
Incineration from helicopter crash impact and fuel-fed fire
AI-generated summary
On 21 February 2006, a Robinson R44 helicopter carrying pilot Vita Mara Stott and three mining survey technicians crashed near Gunpowder, Queensland, approximately 100km north-west of Mount Isa. All four occupants died from incineration. The coroner found no evidence of mechanical failure. The likely cause was the pilot attempting to hover outside ground-effect in conditions where the aircraft was overloaded and operating above its out-of-ground-effect hover weight due to high altitude (312m), high ambient temperature (38°C), and loading with passengers and fuel. The pilot was inexperienced (214 hours as pilot-in-command, only six weeks of survey flying experience). Contributing factors included failure to weigh passengers or calculate fuel weight pre-flight, inadequate pre-flight briefing from the Chief Pilot on weight limitations for prevailing conditions, lack of power check procedures, and workload/fatigue. The coroner recommended CASA audit the operator's operations manual, strengthen manufacturer safety notices, and ensure operators brief pilots on weight-performance limitations.
AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes.
Error types
Contributing factors
- Pilot inexperience: 214 hours pilot-in-command, six weeks survey flying experience only
- Aircraft overloaded at time of crash, exceeding out-of-ground-effect hover weight
- High altitude (312m) and high ambient temperature (38°C) creating density altitude issues
- Pilot attempted to hover outside ground-effect in conditions where aircraft lacked sufficient hover performance
- Failure to weigh passengers or calculate fuel weight pre-flight
- Inadequate Chief Pilot pre-flight briefing on weight limitations for the specific operating conditions
- Lack of mandatory power check procedures in operator's operations
- High workload and fatigue factors in survey operations
- No documented systematic briefing on performance charts and limitations
Coroner's recommendations
- CASA audit NAH's operations manual to remedy apparent shortcomings in procedures for passenger weighing, fuel weight calculation, power checks, and documented pre-flight briefing on performance limitations
- CASA consider whether current regulatory arrangements give sufficient force to manufacturers' safety notices and performance charts in pilots' operating handbooks
- CASA issue an advisory in Flight Safety magazine drawing attention to the risk of not observing weight and performance limits, particularly regarding the Robinson R44 and survey operations
- CASA's acceptance and audit of AOC (Air Operator Certificate) holders' operations manuals should have regard to how operators operationalize manufacturer guidelines and ensure compliance with performance chart limitations
- ATSB review and improve exhibit control procedures to minimize errors in future aircraft accident investigations, particularly for fuel drums and evidence in remote locations
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