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Hypnosis in the investigation of aviation accidents.

The efficacy of hypnotic inquiry techniques with ten witnesses to six recent Naval aircraft accidents was evaluated in this study. Eight witnesses had been directly involved in an accident, five as mishap pilots. Interviews were conducted under conservative standards of practice after regular interviews had been completed and all depositions taken. Naval officers who accompanied the witness(es) to the interviews and concomitantly assisted the accident investigation boards served as the evaluators. Important information concerning the accidents was gained in the majority of the interviews. Secondary survival information of importance was obtained in a number of cases as well. None of the witnesses experienced psychological or career problems as a result of the interviews, and the hypnosis seemed highly therapeutic in some cases. Results suggest that hypnotic interview techniques with witnesses may be of great value in the investigations of certain aircraft accidents.

Accidents, Aviation↗

Spatial disorientation in general aviation accidents.

Spatial disorientation (SD) was the third highest "cause" of fatal accidents in small, fixed-wing aircraft and closely related to the second highest "cause"--"continued VFR flight into adverse weather." SD was a cause or factor in 16% of all fatal accidents. When SD was ascribed as a cause or factor in an accident, 90% of the time that accident involved fatalities. Small, fixed-wing aircraft under 12,500 lb (570 kg) accounted for 97.3% of all SD accidents. Inclement weather was associated with 42% of all fatal accidents, and SD was a cause or factor in 35.6% of these. Flight was initiated into and continued into adverse weather in 19.7 and 68.7%, respectively, of SD weather-related fatal accidents. Fog (56.8%) and rain (41.8%) were the most prevalent adverse weather conditions. These and other data attest to the importance of this psychophysiological phenomenon in flight safety.

Accidents, Aviation↗

The prevalence of visual deficiencies among 1979 general aviation accident airmen.

Analyses of the accident experience of pilots who were monocular, did not meet vision standards, had color vision defects and no operational restrictions, or wore contact lenses have shown higher-than-expected accident experience in previous studies. However, no causal role had been assigned. In the present study of accidents during 1979, the pilots with aphakia and artificial lens implants and the total eye pathology population had significantly higher accident rates, but the monocular pilots did not. Again, no causal role had been ascribe. There are still unresolved questions about the consistent operational performance of monocular pilots, those who are not fully corrected to 20/20 distant visual acuity bilaterally, airmen with near vision deficiencies only who are not required to wear corrective glasses, those without fusion, and several with appreciable pathology who have 20/20 corrected central visual acuity, but about whom we know very little concerning their dynamic, peripheral, depth, or accommodative function.

Accidents, Aviation↗