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1 <br /> 3 <br /> 1 <br /> . i <br /> of small aircraft. (,0:4 <br /> A basic rtility Airport which is equivalent to the Midway proposal <br /> would accomadate about 95% of the propeller Airplanes 4=12,500 lbs. <br /> Some definitions that have to do with the physical layout of the airport <br /> and the air *faces around it. OAP , t , (,00s)De.,,- 1) ' <br /> I i; ., - __ <br /> Primary surface. A surface longitudinally centered on a runway. When the <br /> / <br /> runway has a speciallY prepared hard surface, the primary surface extends <br /> 1 <br /> 200 feet beyoitd each end of that runway: but—when-the-runimay- ca.. r. -i- - y <br /> 1 <br /> prepared hardIsurfaceplanned-haff3-sttrface, _.- . '...,.... „., ., ..,c ,... _ . . <br /> I <br /> sac t -AA. I. -4. • . - , The elevation of any point on the primary surface <br /> is the same as the elevation of the nearest point on the runway centerline. <br /> ipraltzsc, LfIIrI )oirp+ 15 <br /> The width of a primary surface is: <br /> CO 250 feet for tittilityrunways having only visual approaches. <br /> I <br /> Approadhisurface. A surface longitudinally centered on the ext§leded <br /> runweSruenterline and extending outward and upward atilt each end of the priiarY <br /> surface. An approach surface is applied to each end of each runway based <br /> upon the type lof approach available or planned for that runway end.. <br /> (1) The inner edge of the approach surface is the same width as the pri- <br /> mary surface and uniformly to a width of: <br /> 2,000 feet for that end of a utility runway with a nonprecision instru- <br /> ment approach: <br /> (2) The approach surface extends for a horizont,11 distance of: <br /> k:04 5,000 feet at a slope of 20 to 1 for all utility and visual runways: <br /> runway 1 <br /> clear zone is an area at ground level that begins at each end <br /> of the primary surface . . . and extends with the width of the approach sur- <br /> face . . . to terminate directly . . . where the slope reaches a height of <br /> 1 <br /> 1 <br /> 50 feet above the runway end or 50 feet above the terrain.„. <br /> The folio ji ing information is taken from a letter by Bruce Matthew dated <br /> 1 <br /> June 30, 1982 . c:1 the Orange County Planning Department. , , - 4...:-...67.-:-.,--, <br /> 1 <br />