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FACILITY REQUIREMENTS TABLE 3-29 GENERAL AVIATION HANGAR REQUIREMENTS Planning Activity Level Hangar Type PAL 1PAL 2PAL 3 2015 T-Hangars Count134136140144 Square Footage134,000136,000140,000144,000 Surplus/(Deficiency)(2,000)(6,000)(10,000) Box Hangars Count40414244 Square Footage100,000102,500105,000110,000 Surplus/(Deficiency)(2,500)(5,000)(10,000) Corporate Hangar Count Count891011 Square Footage80,00090,000100,000110,000 Surplus/(Deficiency) (10,000)(20,000)(30,000) Source: Airport records, RS&H Analysis, 2016 Note: Square footage is approximated using standard dimensions. T-Hangars calculated as nested 1,000 square feet each. Box Hangars calculated as 50'x50'. Corporate Hangars calculated as 100' x 100'. Though this analysis determined specific requirements based on hangar type, the real use of this analysis is to determine the total amount of land that may be required to meet future demand. This is because actual hangar development is based primarily on financial economics. For these reasons, land reservations must be created to ensure space is available for future hangars. For example, some developers may find greater economy in building one large hangar and housing multiple aircraft instead of building a row of individual T-hangars. This is why future land reservations must be flexible, and conceptual layouts must be organized to provide on-demand construction of any of the different hangar types. In addition to space requirements, Part 77 surfaces and Air Traffic Control Tower (ATCT) line-of-sight issues need to be considered when designating building locations around the airfield and designing the heights of new hangars. Air traffic controllers must maintain visual line-of-sight to all movement areas on the airfield, however, an ongoing FAA pilot-program is looking into “remote towers” which allow ATC to use remotely located cameras to see different sections of the airfield. When and if the program is sanctioned by the FAA, line-of-sight from the ATCT cab may not be as critical. Theoretically, ATC operations could even take place at a remote facilities without the requirement to build and maintain on- airfield air traffic control towers. Aircraft Tie-Downs Aircraft tie-downs are used primarily by transient aircraft. Typically, small single engine and multi-engine aircraft use tie-downs when parked outside during windy days or when they remain at the airport overnight. Each general aviation apron area has its own needs and requirements based on the typical use of that area. EUGENE AIRPORT MASTER PLAN 3-57