Geographic Position Markings
Geographic Position Markings (GPM) are visual aids used to identify a specific location on the earth's surface. In aviation, GPMs are used to mark the location of an aircraft or a navigational aid. These markings are typically represented by a combination of letters and numbers, and are used in conjunction with a navigation system to determine the precise location of an aircraft. GPMs can be found on runways, taxiways, and other areas of an airport, as well as on navigational charts and maps. They are an essential component of modern aviation, allowing pilots to navigate with precision and accuracy.
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