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2fSanfCarlosfAirportfandf Environsf <br /> 9.A. - Page 30 <br /> paragraphs describe each airspace classification, as well as the applicability of each classification <br /> to airspace in the vicinity of San Carlos Airport. <br /> • Classok airspace is designated for positive control of aircraft and ranges from 18,000 feet <br /> above mean sea level(MSL)to 60,000 feet MSL. Within Class A airspace, only aircraft <br /> operating under instrument flight rules(IFR)that are on instrument flight plans are <br /> authorized. The aircraft must have specific equipment and air traffic control(ATC) <br /> clearance before entering the airspace. All airspace at and above 18,000 feet above MSL in <br /> the vicinity of San Carlos Airport is classified as Class A. <br /> • ClasscB airspace is generally defined as that airspace from the surface up to 10,000 feet <br /> above MSL. This airspace usually surrounds the nation's busiest airports(e.g., San <br /> Francisco International Airport), and is individually tailored consisting of a surface area <br /> and two or more layers. Class B airspace is sometimes described as an"upside down <br /> wedding cake"designed to contain all published instrument procedures once an aircraft <br /> enters the airspace. An ATC clearance is required for all aircraft to operate in Class B <br /> airspace, and all aircraft that are so cleared receive separation services from other aircraft <br /> within the airspace. <br /> • ClassC airspace is the airspace from the surface up to 4,000 feet above the airport <br /> elevation charted in MSL surrounding those airports that have an operational control tower, <br /> are serviced by a radar approach control, and that have a certain number of IFR operations <br /> or passenger enplanements (e.g.,Norman Y. Mineta San Jose International Airport). Like <br /> Class B airspace, Class C airspace is individually tailored to meet the needs of the <br /> respective airport. Pilots must establish two-way radio communications with the ATC <br /> facility providing air traffic control services prior to entering Class C airspace.VFR aircraft <br /> are separated from IFR aircraft in Class C airspace. <br /> • Class d)airspace is generally that airspace from the surface to 2,500 feet above ground <br /> level(AGL). The configuration of Class D airspace are individually tailored and shown as <br /> a dashed blue line on sectional charts with an altitude representing the extent of the <br /> airspace from the surface. The airspace immediately surrounding San Carlos Airport is <br /> Class D airspace. <br /> • ClassaE airspace is controlled airspace that encompasses all instrument approach <br /> procedures and low-altitude federal airways. Only aircraft conducting instrument flights are <br /> required to be in contact with air traffic control when operating within Class E airspace. <br /> While aircraft conducting visual flights in Class E airspace are not required to be in radio <br /> communications with air traffic control facilities,visual flights can only be conducted if <br /> minimum visibility and cloud ceilings exist. <br /> • ClassC airspace is uncontrolled airspace that does not require contact with an air traffic <br /> control facility. <br /> Exhibita2-4 depicts the airspace in the vicinity of San Carlos Airport. During hours of ATCT <br /> operation(7:00 a.m. to 9:00 p.m. daily), San Carlos Airport is located under Class D airspace. <br /> Class D airspace extends to a three-nautical mile radius from the airport to an elevation of <br /> approximately 1,500 feet AGL northeast of the runway and up to 2,000 feet AGL southwest of <br /> the runway. Prior to entering this airspace, aircraft are required to contact the ATCT. Class B <br /> SanfCarlosfAirportV 2-9 ESAfAirportsf/130753f <br /> ALUCPf W hitef Pape/ Junef2014f <br />