Arlington Municipal Airport Development Plan Arlington Airport Development Plan

TABLE 2S Forecast Adjustment for ATCT After‐Hours Operations Arlington Municipal Airport Base Year 2014* 2019 ATCT OPERATIONS General Aviation Itinerant 38,239 41,000 Local 31,256 34,000 Total General Aviation Operations 69,495 75,000 Air Taxi 1,202 1,600 Military 102 300 Air Carrier 291 300 Total ATCT Operations 71,090 76,600 ADJUSTED OPERATIONS General Aviation Itinerant 40,151 43,050 Local 32,819 35,700 Total General Aviation Operations 72,970 78,750 Air Taxi 1,262 1,680 Military 107 315 Air Carrier 306 315 Total Adjusted Operations 74,645 81,060 * ATCT records for 12‐month period from July 2013 through June 2014 Adjustment accounts for the hours (9:00 p.m. ‐ 7:00 a.m.) when the ATCT is closed 2024 44,000 37,000 81,000 2,200 300 300 82,700 46,200 38,850 85,050 2,310 315 315 87,990 ANNUAL INSTRUMENT APPROACHES An instrument approach, as defined by the FAA, is “an approach to an airport with the intent to land by an aircraft in accordance with an Instrument Flight Rule (IFR) flight plan, when visibility is less than three miles and/or when the ceiling is at or below the minimum initial approach altitude.” To qualify as an instrument approach, aircraft must land at the airport after following one of the published in‐ strument approach procedures in less than visual conditions. Forecasts of annual instrument ap‐ proaches (AIAs) provide guidance in determining an airport’s requirements for navigational aid facili‐ ties, such as an instrument landing system. It should be noted that practice or training approaches do not count as annual AIAs, nor do instrument approaches conducted in visual conditions. During poor weather conditions, pilots are less likely to fly and rarely would perform training opera‐ tions. As a result, an estimate of the total number of AIAs can be made based on a percentage of itin‐ erant operations regardless of the frequency of poor weather conditions. An estimate of three percent of total itinerant (general aviation, air taxi, military, and air carrier) operations is utilized to forecast AIAs at Arlington Municipal Airport, as presented in Table 2T. Chapter Two - 33

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