This paper discusses a concept called "Paired Approaches" which is designed to facilitate approaches to closely spaced parallel runways (CSPRs) -i.e., runways separated by 700 ft to 2500 ft, in instrument meteorological conditions (IMC). Such runway pairs experience a significant loss of arrival capacity during IMC and marginal visual conditions because currently, runway pairs like this can only be used for simultaneous arrivals when pilots can provide visual separation. The basic procedure design, operations concept, the required cockpit tools and initial feasibility of the paired approach concept were developed in the 1990's and included real time pilot and controller simulations and evaluations. These initial simulations indicated that the Paired Approach procedure was feasible for both pilots and controllers.
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