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see and avoid
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Human factors digest n.33. Montreal, 1993. (Cir. 245 AN/147).
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Part III: investigation. Montreal, 2011. (Doc. 9756 AN/965).
- Contexto
- Regardless of the above considerations, both airplanes were operating in visual flight conditions and therefore were required by regulations to see and avoid each other; however, in this case, their failure to do so must be evaluated in context with the limitations placed on the pilots by the angles of course, the size of the targets, the wispiness of the targets, and the physiological capabilities of the human eye to accomplish this task.
- Historically, many of the mid-air collisions which occurred in visual conditions were concluded with some type of a finding which said there was a “failure to see and avoid” on the part of both crews. However, a thorough review of the facts of the accident may have resulted in completely different findings. Unless it is known that a crew member was physically capable of seeing or detecting the other aircraft and that there was sufficient time to react to a sighting, a “failure to see and avoid” finding is not accurate. However, with a careful collection of all of the factual evidence and then a systematic analysis of the data, an investigator can usually determine the collision angles involved in the accident. Once that information is established, the investigator can accurately calculate what each crew member could have seen from the cockpit. This information also provides a scientific basis for any safety improvements that the investigator wants to pursue.
- Related Term
- detect and avoid
- Português
- ver e evitar