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This report presents a benefit/cost analysis of and develops establishment and discontinuance criteria for the Touchdown Runway Visual Range (RVR)System at the first two Category I precision instrumented runways at an airport. These criteria will be affected through a change to FAA Order 7031.2C, Airway Planning Standard Number One (APS-1). APS-1 contains the policy and summarizes the criteria used in determining eligibility of terminal locations for establishment, discontinuance and improvements of air navigation facilities and air traffic control services. Applying the RVR benefit/cost criteria to 470 Category I runways at 359 airport traffic control tower locations identifies 103 airports satisfying the criteria for an initial Category I Touchdown RVR and 107 airports satisfying the criteria for both a first and second Category I Touchdown RVR, for a total of 317 qualifying runways. However, since benefit/cost criteria are but one of several inputs to the FAA decision-making process relative to investment in airport facilities and equipment, the ultimate site-specific investment action must be based on all pertinent factors and considerations. Sensitivity of the criteria results to several key assumptions is also examined. Keywords: Instrument landing system; Microwave landing system; Investment criteria; Capital budgeting. (EDC).
This document provides results of the Category IIIb Evaluation of the New Generation Runway Visual Range (RVR) system. The evaluation was conducted from September 29 to October 8, 1994, at Mt Washington, NH. The primary purpose of the evaluation was to obtain data indicating RVR performance during actual Category IIIb visibility conditions. The evaluation consisted of comparing RVR system measurements with those of human observers viewing runway lights in dense clouds and fog. Observer and RVR measurements were obtained simultaneously and recorded for statistical analysis. Approximately 500 observations were made during the evaluation under day and night conditions. In addition to using runway lights, 'black targets'--dark colored objects, were used in observations and compared with RVR measurements. The black targets were used during light conditions where they would be more visible than runway lights. Results indicated that RVR accuracy was generally within 100 feet or one reporting unit of the observed visibility.