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<br />Utilization of hangar space varies as a <br />function of local climate, security, and <br />owner preferences. The trend in <br />general aviation aircraft, whether <br />single or multi-engine, is in more <br />sophisticated (and consequently more <br />expensive) aircraft. Therefore, many <br />hangar owners prefer hangar space to <br />outside tiedowns. This is evident at San <br />Marcos Municipal Airport as <br />approximately 15 based aircraft are <br />located on outside tiedowns. Some of <br />these owners of these aircraft would <br />prefer to be in a hangar, however, with <br />the dramatic increase in based aircraft <br />at HYI' hangar spaces are not readil;v <br />available. <br /> <br />Future hangar requirements for the <br />airport are summarized on Exhibit 3D. <br />As indicated on the exhibit, additional <br />hangars will be needed to accommodate <br />projected based aircraft. A planning <br />standard of 1,200 square feet for single- <br />engine aircraft and 2,500 feet for multi- <br />engine aircraft were used to determine <br />aircraft storage hangar requirements. <br />Total hangar area was increased 15 <br />percent to account for future aircraft <br />maintenance and repair needs. <br /> <br />Presently, aircraft storage and <br />maintenance and repair needs are being <br />met through the use of the eight <br />conventional hangars, 62 T-hangars, <br />fourteen shade hangars, and numerous <br />smaller "corporate" clearspan hangars. <br />T-hangars are used for small single and <br />multi-engine storage while most <br />business jets and turboprop aircraft are <br />located in the corporate hangars. In the <br />future it is expected that the aircraft <br />storage hangar requirements will <br />continue to be met through a <br />combination of hangar types. The <br />alternatives analysis will examine the <br /> <br />3-20 <br /> <br />options available for hangar <br />development at the airport and <br />determine the best location for each <br />type of hangar facility. Analysis, to be <br />conducted later, will determine wether <br />existing fee structures for existing <br />leases of airport hangar facilities is <br />adequate. The financial analysis will <br />consider both existing and future lease <br />structures. <br /> <br />Aircraft Parking Apron <br /> <br />A parking apron should be provided for <br />at least the number of locally-based <br />aircraft that are not stored in hangars, <br />as well as transient aircraft. <br />Approximately 100 tiedowns are <br />available for transient and based <br />aircraft at the airport. Although the <br />majority of future based aircraft were <br />assumed to be stored in an enclosed <br />hangar, a number of based aircraft will <br />still tiedown outside. <br /> <br />Total apron area requirements were <br />determined by applying a planning <br />criterion of 700 square yards per <br />transient aircraft parking position and <br />570 square yards for each locally-based <br />aircraft parking position. Transient <br />business jet positions were determined <br />by applying a planning criterion of <br />1,600 square yards for each transient <br />business jet positions. The results of <br />this analysis are presented on Exhibit <br />3D. <br /> <br />Based upon the planning criteria above <br />and assumed transient and based <br />aircraft users, it appears that the <br />existing apron area will be more than <br />adequate to meet future aviation <br />demand projections. This however, can <br />be misleading as the majority of activity <br />