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原文传递 Evaluation of New Obstruction Lighting Techniques to Reduce Avian Fatalities.

题名：	Evaluation of New Obstruction Lighting Techniques to Reduce Avian Fatalities.
作者：	J. W. Patterson;
关键词：	aviation safety, collision avoidance, conspicuity, hazards, lighting equipment, mortality, pilots, standards, tower lighting, us faa, warning signals, wildlife management
摘要：	Wildlife biologists have conducted extensive research to better understand how migratory birds are negatively affected by obstruction lights, which are used at night to warn pilots that they are approaching an obstruction hazard. The research concluded that migratory birds appear to be attracted to the steady-burning (i.e., nonflashing) obstruction lights on communication towers and, as a result, thousands of birds are killed annually through collisions with these obstructions. Wildlife organizations, the telecommunication industry, and the Federal Communication Commission collectively approached the Federal Aviation Administration (FAA) and requested that the FAA consider redefining their standards for obstruction lighting to either omit or flash the normally steady-burning red lights to reduce their impact on the mortality rates of migratory birds. In the research reported here, the FAA Airport Technology Research and Development Team evaluated the proposal to omit or flash the normally steady-burning red lights. In addition, researchers evaluated the potential benefit of using light-emitting diode obstruction lights instead of conventional incandescent obstruction lights as a way to mitigate their impact on birds, due to their unique color and flash pattern. A series of flight evaluations was conducted to compare the obstruction lighting on several communication towers in the northern Michigan area. A tower that was equipped with a nonstandard lighting configuration in which the steady-burning red lights were programmed to flash in unison with the red flashing lights was also included in the flight evaluation. The results showed that flashing the steady-burning lights was acceptable for small towers (151 to 350 feet in height) and that they could be omitted on taller towers (over 351 feet) so long as the remaining brighter, flashing lights were operational. The optimal flash rate for the brighter lights to flash simultaneously was determined to be between 27 and
总页数：	64p
报告类型：	科技报告