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Lighting and NAVAID improvements that should be considered for the <br />reliever airports based on these standazds aze summarized in Table V-2. A precision <br />approach includes either microwave landing system (1VIIS) or instrument landing <br />system (IIS) instrumentation. ILS instrumentation includes both a localizer and <br />(glideslope) indicator. A nonprecision approach is an approach to either an airport <br />or a specific rttmvay end using existing VORs or NDBs in the region. <br />The titree reliever airports with existing precision approaches include St. Paul <br />Downtown, Flying Cloud, and Airlake airports. With the exception of Anoka County- <br />Blaine, a preliminary analysis of the region's airspace indicates that it is not feasible <br />to implement an instrument approach to arty of the other existing reliever airports. <br />Additional approach procedures aze rerntnmended for St.Paul Downtown and Flying <br />Cloud to further enhance IFR operations at these airports. Anew general aviation <br />airport in Seazch Area "A" should be sited to allow precision approach capabilities. <br />While this new airport tray not reach operational levels required to implement a <br />precision approach during the planning period, it is recommended that a precision <br />approach be pursued once these levels aze obtained. This would greatly improve 1FR <br />coverage in the high-growth azea in the northwestern portion of the metropolitan <br />region, which currently has limited coverage by precision approach runways. <br />Another key recommendation with regazd to the reliever system includes the <br />addition of an ATCT at Anoka County-Blaine. This is recommended to facilitate <br />safe operation of the recommended pazallel runway. It is likely that Anoka County- <br />Blaine will reach the operational requuements necessary for the airport to be <br />considered for an FAA tower by 1993. It is important for the airport to explore the <br />vazious sources previously mentioned to implement the recommended tower. <br />(3) Aircraft Storage Requirements <br />Demand for aircraft storage at airports is directly related to climate and the <br />type of aircraft based at each airport. Areas with more severe weather conditions <br />V-23 <br />