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However, most of the layers of data on the charts include specific information about obstacles, airspace designations, and facility information (locations, radio frequencies, etc.). The legend divides these into several types of information, namely: airports, radio aids, traffic and airspace services, obstructions, topographic, and miscellaneous.
Quonset State Airport: OQU RI 19,400 10 2022 [323] Florence Regional Airport: FLO SC 23,572 41 2022 [324] Greenville Downtown Airport: GMU SC 49,006 194 2022 [325] Donaldson Air Force Base: GYH SC 45,186 12 2019 [326] Hilton Head Airport: HXD SC 37,632 86 2018 [327] Grand Strand Airport: CRE SC 35,772 37 2021 [328] Rapid City Regional Airport ...
If the airspace is not Class A, B, C, or D, and is controlled airspace, then it is Class E airspace. Class E airspace extends upward from either the surface or a designated altitude to the overlying or adjacent controlled airspace. When designated as a surface area, the airspace is configured to contain all instrument procedures.
The airspace is commonly depicted as resembling an "upside-down wedding cake". The innermost ring extends from the surface area around the airport to typically 10,000' MSL . Several outer rings usually surround it with progressively higher floors to allow traffic into nearby airports without entering the primary airport's Class B airspace.
The United States airspace system's classification scheme is intended to maximize pilot flexibility within acceptable levels of risk appropriate to the type of operation and traffic density within that class of airspace – in particular to provide separation and active control in areas of dense or high-speed flight operations.
A prohibited airspace is an area (volume) of airspace within which flight of aircraft is not allowed, usually due to security concerns. It is one of many types of special use airspace designations and is depicted on aeronautical charts with the letter "P" followed by a serial number.
Gladwin Zettel Memorial Airport covers an area of 304 acres (121 ha) at an elevation of 773 feet (236 m) above mean sea level.It has two runways: 9/27 is 4,699 by 75 feet (1,432 x 23 m) with an asphalt surface; 15/33 is 2,580 by 150 feet (786 x 46 m) with a turf surface.
All airspace above FL195 is class C controlled airspace, the equivalent to airways being called Upper Air Routes and having designators prefixed with the letter "U". If an upper air route follows the same track as an airway, its designator is the letter "U" prefix and the designator of the underlying airway.