摘要: In late 1992, FAA senior executives launched the Category II/III Project toobtain more definitive information regarding Cat II/III instrument approaches conducted in the NAS. Their emphasis revolved around three main questions: Ho... 展开 In late 1992, FAA senior executives launched the Category II/III Project toobtain more definitive information regarding Cat II/III instrument approaches conducted in the NAS. Their emphasis revolved around three main questions: How many approaches are actually shot to Cat II/III minima. How many landings are lost at airports because runways are not equipped with Cat II/III equipment. How many aircraft are denied landing because runways are not equipped with Cat II/III minima and the aircraft attempting to land are not equipped. To address the issues of the Category II/III Project, the FAA's Operations Research Service, Operational Analysis Team, conducted the technical analysis and published the findings in a two-part report. The first part consists of establishing the actual number of Category II/III approaches conducted in the NAS, as well as the number of disrupted landings due to aircraft or runway equippage. The technical analysis is documented in the Category II/III Project, Part One Category II/III Utilization and disruption Analysis report, published by the FAA's Operations Research Service in July 1994. Part Two, which is contained in the report, consists of determining the future quantities of Cat II/III equipment that may be required in the NAS. Based on the application of Category II/III ILS Establishment Criteria, this report provides a minimum, most likely, and maximum estimate of the number of Cat II and Cat III runways and airports that may qualify for Cat II/III equipment for the year 2010. 收起