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A sectional chart is a two-sided chart created from a Lambert Conformal Conic Projection [1] with two defined standard parallels. The scale is 1:500,000, with a contour interval of 500 feet. The size of each sectional is designed to be "arm's width" when completely unfolded.
The first sectional chart was published in 1930; in 1937 the full series of the lower 48 states was completed. These early sectional charts were smaller (most covered two degrees of latitude and six of longitude) with the map on one side; after 1950 the legend and index to adjoining charts was on the reverse.
MEF's of 4700 and 3300 feet are shown on this excerpt from the FAA's Los Angeles sectional aeronautical chart. Maximum elevation figure (MEF) is a type of visual flight rule (VFR) information that indicates the elevation of the highest geographical feature within a GEOREF quadrangle area.
An aeronautical chart is a map designed to assist in the navigation of aircraft, much as nautical charts do for watercraft, or a roadmap does for drivers. Using these charts and other tools, pilots are able to determine their position, safe altitude, best route to a destination, navigation aids along the way, alternative landing areas in case of an in-flight emergency, and other useful ...
Multiview and sectional view drawings Y14.31–2008: Undimensioned drawings Y14.36M–1996: Surface texture symbols Y14.38–2007: Abbreviations and acronyms for use on drawings and related documents Y14.4M–1989: Pictorial drawing Y14.41–2003: Digital product definition data practices Y14.42–2002: Digital approval systems Y14.5–2018
Radio tower of NKR Leimen-Ochsenbach, Germany This symbol denotes an NDB on an aeronautical chart. A hollow square superimposed on this symbol indicates a collocated distance measuring equipment (DME) installation. A non-directional beacon (NDB) or non-directional radio beacon is a radio beacon which does not include inherent directional ...
A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...
VOR/DME symbol used on aeronautical charts. During the mid-1960s, ICAO began the process of introducing a standardized radio navigation system for medium-area coverage on the order of a few hundred kilometres. This system would replace the older Low-frequency radio range and similar systems used to navigate over national ranges.