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The following list shows specific aeronautical transponder codes, and ranges of codes, that have been used for specific purposes in various countries. Traditionally, each country has allocated transponder codes by their own scheme with little commonality across borders. The list is retained for historic interest.
Jun 27, 2022 · What is a Squawk Code? Squawk codes are four-digit codes ranging from 0000 all the way through to 7777 that are set on an aircraft transponder. These unique identifiers allow air traffic control units to distinguish between different aircraft. These work with mode A, mode C, and mode S transponders. What is a transponder?
Nov 25, 2023 · Prior to departure, aircraft will be given squawk codes, which will be used by ATC to direct the aircraft during its flight. This code will show up on ATC screens and helps provide basic information such as speed and altitude. Squawk codes are four digits, with each being a number between zero and seven.
May 19, 2023 · Squawk codes are what air traffic control (ATC) use to identify aircraft when they are flying. They are unique four-digit numbers and range from 0000 to 7777; some of which are fixed values signifying specific scenarios (see below), others being randomly generated by ATC.
Dec 7, 2020 · 0040. Civil Helicopters North Sea. Squawk codes 0041 to 0061. 0041-0042. Greater Manchester Police ASU. 0043-0044. Metropolitan Police ASU. 0045. Sussex Police ASU.
Oct 11, 2024 · Squawk codes are unique four-digit numbers ranging from 0000 to 7777 set on an aircraft transponder to allow air traffic control (ATC) to identify that aircraft uniquely and distinguish it from other aircraft in the sky. Some squawk codes are fixed values signifying specific scenarios (see below), and ATC randomly generates others.
The most widely recognized squawk codes are the 3 codes which indicate emergency situations. These emergency squawk codes are established as a worldwide standard by ICAO: 7500 - Aircraft hijacking. 7600 - Radio failure/lost communications.
Apr 24, 2024 · A squawk code is another term to reference a flight’s four-digit transponder code. Squawk codes are assigned to a flight by ATC and are included in the instrument flight plan clearance. This clearance is usually available to pilots 30 minutes prior to departure.
Aug 11, 2023 · A transponder code, or squawk code, is a four-digit numerical sequence a pilot enters into their radio transponder. There are 4,096 discrete squawk code possibilities ranging from 0000 to 7777. Each code combination is a unique identifier that allows air traffic controllers to keep track of individual aircraft.
Apr 27, 2022 · First, the transponder sends a signal to the radar that contains a four-digit squawk code. For example, if the air traffic controller tells one plane to “Squawk 1234,” that number will appear on the radar scope.
