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APPENDIX II: PRELIMINARY AIRPORT ASSESSMENT <br /> APPENDIX <br /> <br />Airport Strategic Business Plan, 07/26/2021 51 <br />C. AIRPORT REFERENCE CODE (ARC) <br />NPIAS airports are expected to adhere to current federal aviation standards for airport <br />design. Furthermore, any grant by the FAA to a NPIAS airport for new or improved airside <br />infrastructure must adhere to current standards, except as approved by the FAA. The ARC <br />is an airport designation that signifies an airport’s highest Runway Design Code. The ARC is <br />used for planning and design only and does not limit the aircraft that may be able to operate <br />safely on an airport. The first component of the ARC, depicted by a letter, is the Aircraft <br />Approach Category (AAC) and relates to an aircraft’s approach speed. Table 18 represents <br />the various Aircraft Approach categories. <br />Table 18: Aircraft Approach Categories (AAC) <br />AAC Approach Speed <br />A Approach speed less than 91 knots <br />B Approach speed 91 knots or more but less than 121 knots <br />C Approach speed 121 knots or more but less than 141 knots <br />D Approach speed 141 knots or more but less than 166 knots <br />E Approach speed 166 knots or more <br />The second component of the ARC, depicted by a Roman numeral, is the Aircraft Design <br />Group (ADG) and relates to either the aircraft wingspan or tail height (physical <br />characteristics); whichever is most restrictive, of the largest aircraft expected to operate <br />on the airport’s runway and taxiways adjacent to the runway. Table 19 represents the <br />various Aircraft Design Group categories. <br />Table 19: Aircraft Design Group (ADG) <br />ADG Tail Height (feet) Wingspan (feet) <br />I < 20’ < 49’ <br />II 20’ to <30’ 49’ to <79’ <br />III 30’ to <45’ 79’ to <118’ <br />IV 45’ to <60’ 118’ to <171’ <br />V 60’ to <66’ 171’ to <214’ <br />VI 66’ to <80’ 214’ to <262’ <br />The third component of the ARC relates to the visibility minimums expressed by Runway <br />Visual Range (RVR) values in feet. Table 20 represents the various Aircraft Design Group <br />categories. <br />Table 20: Runway Visual Range (RBR)  <br />RVR Instrument Flight Visibility Category (statute mile) <br />VIS Visual approach use only <br />5000 Not lower than 1 mile <br />4000 Lower than 1 mile, but not lower than ¾ mile <br />2400 Lower than ¾ mile, but not lower than ½ mile <br />1600 Lower than ½ mile, but not lower than ¼ mile <br />1200 Lower than ¼ mile