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AIRPORT MASTER PLAN <br /> <br />The forecast for instrument approach procedures is based on the IFR flight plan <br />filings for the last five-year period. During the last five year period there has been <br />an average of 9,637 IFR operations (takeoffs/landings) at the airport each year. <br />Dividing this number in half provides an estimate on the number of IFR approaches <br />annually. <br />The number of instrument approaches conducted at the airport is expected to <br />increase during the forecast period as a result of changes in aircraft fleet mix (e.g. <br />more jet, turboprop, etc.). Jet and turboprop aircraft typically operate on IFR flight <br />plans. Consequently, as the number of jet and turboprop aircraft using the airport <br />increase, the number of instrument approaches to the airport are also expected to <br />increase. <br />Table 3-15 summarizes the forecast of annual instrument approaches at the <br />Airport throughout the planning period. <br />TABLE 3-15 <br />INSTRUMENT APPROACH FORECASTS, 2019-2039 <br />SAN MARCOS REGIONAL AIRPORT <br />2018 2019 2024 2029 2034 2039 <br />Category <br />Base Yea r PAL 1 PAL 2 PAL 3 PAL 4 PAL 5 <br />Annual Operations 67,591 61,659 73,597 84,666 95,050 105,192 <br />Forecasted Number of Instrument <br />6,440 5,875 7,748 9,760 11,908 14,230 <br />Approaches <br />Source:Garver Forecast Data for HYI, 2019 <br />C RITICAL A IRCRAFT <br />or <br />category of aircraft conducting at least 500 operations per year. Determining the <br />critical aircraft is important for assessing airport design and layout and the <br />structural and equipment needs for both the airfield and terminal area. It is <br />evaluated with respect to aircraft size, speed, and weight. The aircraft operating at <br />San Marcos vary from small piston aircraft, to business jets, to cargo aircraft. <br />Based on the types o <br />the airport is in the Runway Design Code (RDC) C-II category. Based on forecasting <br />analysis shown in this chapter, future critical aircraft could move into <br />the C-III category. <br /> <br />Activity Forecasts Chapter Page 32 of 36 <br />October 2020 <br /> <br />