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An aviator call sign or aviator callsign is a call sign given to a military pilot, flight officer, and even some enlisted aviators. The call sign is a specialized form of nickname that is used as a substitute for the aviator's given name.
9 Sports and games. 10 Political symbols. 11 Other. 12 See also. ... (typically letters used as variable names in equations) ... Traffic signs, ...
In American football, only one offensive player can be in motion at a time, cannot be moving toward the line of scrimmage at the snap, and may not be a player who is on the line of scrimmage. In Canadian football, more than one back can be in motion, and may move in any direction as long as they are behind the line of scrimmage at the snap.
"current": AC (for "alternating current"); less commonly, DC (for "direct current"); or even I (the symbol used in physics and electronics) Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten
Pages in category "Call signs" The following 53 pages are in this category, out of 53 total. This list may not reflect recent changes. ...
Administrative call signs are used with air traffic control facilities similar to those of commercial operators. e.g. Navy Alpha-Golf-Two-Zero-One, Reach-Three-One-Seven-Niner Two. [2] Tactical call signs are used during tactical portions of a flight, and they often indicate the mission of the flight or an aircraft's position in a formation.
Coast Guard aircraft callsigns are almost always the word "Coast Guard" and the 4-digit aircraft number, e.g., "Coast Guard Six-Five-Seven-Niner," although other call signs may be used for special operations such as counter-narcotics interdiction. In tactical situations, the Marine Corps utilizes call signs naming conventions similar to the Army's.
Russian nuclear icebreaker Arktika with call sign UKTY. Merchant and naval vessels are assigned call signs by their national licensing authorities. In the case of states such as Liberia or Panama, which are flags of convenience for ship registration, call signs for larger vessels consist of the national prefix plus three letters (for example, 3LXY, and sometimes followed by a number, e.g. 3LXY2).