Alcohol is a widely used drug, and its abuse is a serious public health problem. Alcohol has many widespread effects on the body, and impairs almost all forms of cognitive function, such as information processing, decision-making, attention and reasoning. Visual and vestibular functions are also adversely affected. The performance of any demanding task, such as flying an aircraft, is thus impaired by the effects of alcohol. Many studies have shown a significant proportion of aircraft accidents associated with alcohol use. Alcohol increases the risk of spatial disorientation, hypoxia and poor…

Cannabis is a commonly used recreational drug, which has widespread effects within the body. Smoking is the most common form of administration. The adverse effects of cannabis on behaviour, cognitive function and psychomotor performance are dose-dependent and related to task difficulty. Complex tasks such as driving or flying are particularly sensitive to the performance impairing effects of cannabis. Chronic cannabis use is associated with a number of adverse health effects, and there is evidence suggesting the development of tolerance to chronic use as well as a well-defined withdrawal…

Executive summary Australian aviation is, by world standards, extremely safe. Fatal accidents in regular public transport (RPT) operations are low and, since the late 1960s, have been confined to low capacity operations. Australia has not had a high capacity RPT fatal accident since 1968 and has not had a RPT jet fatal accident.  The vast majority of Australian civil fatal aircraft accidents occur in general aviation (GA) operations. This study examined Australian ‘VH-registered’ civil aircraft involved in GA fatal accidents for the period 1991 to 2000, and covers fatal accident numbers…

Error Management Training - Defining best practice [Download complete report - PDF: 743KB] Error Management Training- Interview study to identify error management practices in experienced training captains [Download complete report - PDF: 805KB] Error Management Training - Simulator study to identify error management training in current practice [Download complete report - PDF: 1.18MB]

The ATSB Annual Review documents ATSB's achievements and safety activities from 1 July 2003 to 30 June 2004 and outlines its business planning for 2004-2005. Executive Director's message The ATSB had a busy and productive year in 2003-04 in all modes. In its aviation activities, the ATSB released 63 investigation reports including important reports on fatal accidents at Hamilton Island, Bankstown, Moorabbin and Toowoomba and on a Saab 340 serious icing incident near Bathurst. The Bureau generated 46 air safety recommendations including those arising from the Hamilton Island investigation, on…

This project investigated the use of weather radar displays in commercial aviation. Three studies are described. The first study used an expertise model of the use of weather radar displays to classify aircraft accident and incident reports. The three data sources used were the Federal Aviation Administration Accident/Incident Data System, the National Transportation Safety Board Accident and Incident Database, and the Aviation Safety Reporting System. Although generalisation of the outcomes is limited, the results provide some evidence to suggest that where the use of weather radar was…

The aim of this study was to provide information to the flying community about issues that have the potential to affect safety in the hope that increased knowledge and insight could lead to improved safety. The ATSB distributed the 'Aviation Industry Safety Survey' in November 2003 to 5,000 commercial pilots throughout Australia. Pilots were asked to respond to a series of questions regarding their flying experiences in the 12 months prior to receiving the survey. The survey consisted of two sections: Part A and Part B. Information about Part A has been reported in the ATSB Aviation Safety…

Night Vision Goggles (NVGs) are binocular devices that enhance unaided night vision for pilots. Typically, NVGs are mounted on a pilot's helmet. This position enables pilots to look through the goggles outside the cockpit or under the goggles at flight instruments. By enabling the pilot to see in the dark, NVGs have the potential to improve the safety of visual flight at night. In most conditions, night vision goggles provide pilots with a significant increase in the quality of visual information compared with unaided night vision. They allow the pilot to see the horizon, objects, terrain and…

Weather-related general aviation accidents remain one of the most significant causes for concern in aviation safety. Previous studies into the factors associated with weather-related general aviation occurrences have typically compared accident and non-accident cases. In contrast, this study does not concentrate on occurrence outcome. Instead, the emphasis is on the different behaviours that pilots exhibit in the face of adverse weather and, by inference, on the decision-making processes that underlie those behaviours. The work of this study is based on a set of 491 aviation accident and…

The twin-engine power loss accidents were analysed to identify the types of accidents that occurred. Ten of the 11 fatal accidents subsequent to a power loss in twin-engine aircraft were the result of an in-flight loss of control. In contrast, the majority of non-fatal accidents subsequent to a power loss were primarily the result of degraded aircraft performance and resulted in aircraft being forced landed. When a twin-engine aircraft sustains a loss of power, the resulting power output can produce a power condition that is either asymmetric or non-asymmetric. The twin-engine power loss…