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• <br />Chapter 12. ECONOMIC FEASIBILITY <br />81. General. As stated in the introduction to this <br />advisory circular, the technical and economic feasi- <br />bility of master plan considerations must be analyzed <br />throughout the development of the plan. In the estab- <br />lishment of airport requirements, the planner must <br />decide whether it is feasible to expand the existing <br />airport or look for a new airpoort site. In the site <br />selection process, the feasibility of constructing an <br />airport at each possible location must be considered. <br />After site selection, the feasibility of various airport <br />concepts must be tested before the final airfield/ <br />terminal area/access plan is adopted. In each case, <br />preliminary estimates must be made of capital invest- <br />ment, anticipated revenues, and the ability of users to <br />pay costs attributable to proposed improvements. <br />Methods such as determination of facility cost per <br />enplaned passenger, as is used by some airlines, may <br />be helpful in establishing feasibility during the various <br />stages of the plan's development. <br />After these steps have been taken during the devel- <br />opment of the plan, a final evaluation of economic <br />feasibility should be made to establish what the finan- <br />cial prospectus of the airport will be when the plan is <br />implemented and to establish a financial plan for the <br />implementation of the proposed improvements. The <br />terms of economic feasibility should be based on short, <br />intermediate, and long-range forecasts (approximately <br />5, 10, and 20 years) . <br />In simple terms the practicality of the master plan <br />will depend on whether the users of the airport im- <br />provements programmed under the plan can produce <br />the revenues (as may be supplemented by Federal, <br />State, or local subsidies) required to cover annual <br />costs attributable to capital investment plus the annual <br />cost for administration, operation, and maintenance. <br />This must be determined for each stage of development <br />scheduled in the master plan. This consideration <br />should include the cost of capital to be employed in <br />the improvement, the annual costs of facilities, and <br />prospective annual revenues. <br />82. Capital Investment. The schedule of im- <br />provements proposed in the master plan, as well as <br />the cost estimates of those improvements, should be <br />developed as prescribed in Chapter 11. They should <br />schedule construction by phases and break down the <br />costs of proposed improvements by elements such as <br />the passenger terminal area, cargo area, landing area, <br />airport administration, and operations and mainte- <br />nance areas. This will provide the basic capital in- <br />vestment information needed for evaluating the <br />feasibility of individual facilities. Estimated construc- <br />tion costs should be adjusted to include allowance for <br />architect and engineer fees for preparation of detailed <br />plans and specifications, overhead for construction <br />administration, allowance for contingencies, and al- <br />lowance for interest during construction. Estimated <br />costs of land acquisition, as well as the costs of ease- <br />ments required to protect approach and departure <br />areas, should be included. If the master plan pro- <br />vides for the expansion of an existing airport, the cost <br />of the existing capital investment may be required to <br />be added to the new capital costs. <br />83. Break -Even Need. The annual amount <br />which is required to cover cost of capital investment <br />and costs of administration, operation, and mainte- <br />nance can be called the break-even need. The reve- <br />nues required to produce the break-even need are de- <br />rived from user charges, lease rentals, and concession <br />revenues produced by the airport as a whole. To be <br />assured, however, that individual components of the <br />airport are generating a proper share of the required <br />annual revenues, the airport can be divided into cost <br />areas to allow allocation of costs to such areas follow- <br />ing generally accepted cost accounting principles. <br />Carrying charges on invested capital will include de- <br />preciable and nondepreciable items. <br />84. Nondepreciable Investment. Nondepreci- <br />able items are those which will have a permanent <br />value even if the airport site is converted to other <br />uses. Nondepreciable items include the cost of land <br />acquisiton, excavation and fill operations, and road <br />relocations which enhance the value of the airport <br />site. The annual cost of capital invested in non - <br />depreciable assets depends in the first instance on the <br />source of the capital used. If revenue or general <br />obligation bonds have been issued to acquire the asset, <br />71 <br />