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At least 1,135 records · Page 63Linked to original sources
PubMed2004

Distribution and optical purity of methamphetamine found in toxic concentration in a civil aviation accident pilot fatality.

Toxicological evaluation of postmortem samples collected from a pilot involved in a unique fatal civil aircraft accident is described in this paper. A one-occupant airplane was substantially damaged upon colliding with terrain in poor visibility. Remains of the pilot were found outside the aircraft. Pathological examination revealed multiple blunt force injuries and vascular congestion. The fluorescence polarization immunoassay disclosed 8.0 microg/mL amphetamines in urine. Gas chromatographic/mass spectrometric analyses determined the presence of methamphetamine (1.13 microg/mL in blood and 59.2 microg/mL in urine) and amphetamine (0.022 microg/mL in blood and 1.50 microg/mL in urine). Methamphetamine was distributed throughout the body, including the brain. The amount of methamphetamine in gastric contents was 575-fold higher than that of amphetamine. The (+)- and (-)-forms of methamphetamine were present in equal proportions in gastric contents. The methamphetamine concentration found in blood was in the range sufficient to produce toxic effects, causing performance impairment.

Accidents, Aviation↗
PubMedDate not supplied

[Radiation safety of exploitation of radiation sources at the civil aviation airlines].

Radiation risks from isotope-containing equipment, and ionizing and unused X-ray radiation sources are characterized and relevant normative documents with safety requirements to radiation sources installation, radiation safety of aircraft servicing and repair, hand luggage control and heavy luggage registration, personal protection items, system of radiation monitoring at airlines and aircraft works, and liability for breach of performance guidelines are cited.

Aviation↗
PubMed2005

[The cares and anxiety of those involved in the Bijlmermeer aviation disaster did not diminish following the medical investigations].

On October 4, 1992 a cargo jet crashed in the Bijlmermeer district in Amsterdam, the Netherlands, killing 43 people and making hundreds homeless. Many years of confusion and prolonged media attention followed, including public debates and even a Parliamentary Inquiry as to the causes, exposure to various chemical, physical and biological risk factors, and related diseases. Two comprehensive large-scale medical investigations were carried out: a comparative epidemiological study analysing the long-term effects in involved and uninvolved care providers, and an individual medical examination of both residents and care providers with medical or psychological complaints. Later, an effects study was added analysing the effects of both medical investigations on the feelings of anxiety and the attribution of symptoms among the people involved. The epidemiological study revealed more physical and mental symptoms among the involved care providers. Blood, urine and saliva tests, however, revealed no differences. Although the studywas carried out with great care, the findings may have been biased to some extent by an evoked feeling of anxiety and by attention toward health problems brought about by the investigation itself. Another comment is the technical impossibility of stating, after so long a delay, that chemical exposure, e.g. to depleted uranium, could not have been a cause of adverse health effects. The effects study demonstrated that the medical investigations generally did not provide reassurance or decrease the anxiety about health problems. There was even a small increase in complaints. Residents with health problems that had been involved in the disaster still attribute their complaints to harmful chemical exposure.

Accidents, Aviation↗
PubMed2005

Ground crew injuries and fatalities in U.S. commercial aviation, 1983-2004.

INTRODUCTION: Ground crew services are an essential part of airport operations. Injury hazards to ground crewmembers who are in close proximity to aircraft have not been well studied. The objective of this paper was to examine airport ground crew injuries and fatalities involving aircraft of commuter air carriers and major airlines. METHODS: Investigation reports for all ground crew injuries involving commuter and major airline aircraft that occurred at United States airports between 1983 and 2004 were obtained from the National Transportation Safety Board (NTSB) and analyzed to describe the immediate cause and pattern of injury occurrence. RESULTS: During the 22-yr study period, the NTSB recorded a total of 80 ground crew accidents involving landing, taxiing, or standing commercial airline aircraft, yielding an overall rate of 0.47 ground crew related accidents per 1 million aircraft departures. These accidents resulted in injuries to 98 ground crewmembers, including 21 fatalities. Two-thirds of the accidents took place as the aircraft was departing. Vehicular collisions with an aircraft made up 43% of accidents, 34% were caused by moving aircraft equipment such as propellers or nose gear, and 11% resulted from jet blasts or fires. CONCLUSIONS: intervention programs for airport ground personnel should emphasize the safe operation of the aircraft equipment and ground vehicles. Some of the injuries to ground crewmembers might be avoided through improved design of commonly used equipment.

Accidents, Aviation↗
PubMed2005

Hearing loss in military aviation and other trades: investigation of prevalence and risk factors.

INTRODUCTION: Continuous increase in the cost of claims for noise-induced hearing loss in Canadian Forces personnel prompted a review of hearing conservation practices. Investigations comprised retrospective analyses of hearing test results and a prospective survey of risk factors for hearing loss. METHOD: There were 1057 individuals working in 107 air, land, and sea trades who contributed their current and first hearing test results. Subjects completed a 64-item questionnaire relating to demographics, occupational and non-occupational noise exposure history, training in and use of hearing protection, and non-noise risk factors, including head injury, ear disease, medications, and solvent exposure. Subject recruitment, hearing assessment, and questionnaire distribution were carried out by military personnel. Apparatus and protocols for hearing testing conformed to current clinical practice. RESULTS: Prevalence of moderate to severe hearing loss progressed with age, with hearing thresholds in those over 45 yr ranging broadly from normal to over 70 dB HL. Unprotected exposure to noise and solvents appeared to be the likely determinates of adverse outcome. Head injury, ear disease, and the use of ototoxic medications had minimal impact. The data for individuals in 17 selected trades in the 3 environments modeled that of the total sample. DISCUSSION: Responses to the questionnaire suggested that training on noise hazard and selection and use of hearing protection were inadequate. Hearing protection was reported to be incompatible with other gear, uncomfortable, and an impediment to communication. Approaches for upgrading hearing conservation strategies, including the creation of end-user focus groups, were considered.

Adult↗
PubMedDate not supplied

Shiftwork and safety in aviation.

For airline pilots, sleep deprivation and circadian desynchronization due to rapidly rotating shift schedules, rapid time zone changes, and unorganized sleep/wake cycles can result in severe performance decrements. Twelve case histories of accidents in which pilot scheduling might have been a factor are reviewed, and suggestions for the chronohygiene of pilot scheduling are made.

Accident Prevention↗
PubMed1979

[The role of aviation in the epidemiology of smallpox].

The structure and features of the smallpox virus are described and an account is given of the clinical picture of the disease. Tables and graphs are cited to illustrate the progress of the WHO's eradication campaign over the last 10 years. In dealing with part played by the aeroplane in the epidemiology of smallpox, attention is given to the high diffusion potential of the disease owing to increased air travel and the confluence of multi-ethnic and multi-national groups in airports. Prevention should thus be concentrated on airports as opposed to the rest of the country, and both aircrews and ground staff should be vaccinated. Stress indeed is laid on the need for vaccination and the search for further means of preventing its complications.

Aircraft↗
PubMed1990

Clinical aspects of inflight incapacitations in commercial aviation.

Sudden incapacitations can affect a pilot and even a whole crew during a flight, preventing them from performing their task in complete safety. In some cases, they could even cause an accident. Our study examines the causes of sudden in-flight incapacitation in Air France pilots and flight engineers from 1968-88. Ten cases were reported out of a population of 1,800 cockpit crew, each flying an average of 600 h/year. These incapacitations were due to cardiac disorders (1 atrial fibrillation, 1 sinus tachycardia), epileptic attacks (2 generalized seizures), duodenal hemorrhages (2 cases), infection (1 case of severe vertigo due to viral labyrinthitis), metabolic disorders (1 case of hypoglycemia), and sometimes disorders affecting the whole crew (1 case of hypoxia due to a pressurization deficiency, 1 case of CO2 intoxication caused by the inadequate packaging of a container refrigerated in dry ice). Seven times out of ten, incapacitations occurred during cruising, twice during approach, and once on the ground before starting up, with closed doors (CO2 intoxication). Two of these incapacitations led to flight diversions. None of them caused an accident. In this series, incapacitations of a cardiac nature were rarer and less serious than those caused by gastrointestinal or neurological disorders. Prevention is based on detection during systematic medical check-ups, and on crews being trained to recognize subtle incapacitations early and to ensure that the flight continues safely when such a case occurs.

Accident Prevention↗