Uncontrolled IFR at or above 18,000 ft MSL. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.) Ĭivil IFR flights in class G airspace. VFR flight above 10,000' MSL when no other code has been assigned. VFR flight above 12,500' ASL when no other code has been assigned. Also for use in oceanic airspace, unless another code is assigned by ATC. Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. VFR aircraft which fly authorized SAR missions for the USAF or USCG while enroute to/from or within the designated search area. Īir Defense Identification Zone (ADIZ) penetration when unable to establish communication with ATC or aeronautical facility. Ĭalibration Performance Monitoring Equipment (CPME) "Parrot" transponders. Īircraft not in contact with an ATC facility while enroute to/from or within the designated fire fighting area(s). ĭiscrete 1200 series codes unless otherwise allocated (for example, 1255), designated for DVFR aircraft and only assigned by a flight service station. Visual flight rules (VFR) glider operations for gliders not in contact with ATC effective February 2017. Visual flight rules (VFR) glider operations for gliders not in contact with ATC effective February 2012. ( Visual flight rules (VFR) glider operations for gliders not in contact with ATC, through February 2012. Īssigned via FAR 93.95 for use by VFR aircraft in the immediate vicinity of LAX. Visual flight rules (VFR) flight standard squawk code used in North American airspace when no other has been assigned or is applicable. Ĭivil VFR flights in class E or G airspace. Also for use in oceanic airspace unless another code is assigned by ATC. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.) Also for use in oceanic airspace unless another code is assigned by ATC (US). Used exclusively by ADS-B aircraft to inhibit mode 3A transmission. Non-discrete mode A code reserved use in mode S radar/ADS-B environment where the aircraft identification will be used to correlate the flight plan instead of the mode A code. Instrument Flight Rules (IFR) flight below 18,000 ft ASL when no other code has been assigned. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.) Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.Īlso for use in oceanic airspace unless another code is assigned by ATC. Īllocated to Service Area Operations for assignment for use by Terminal/CERAP/industry/unique purpose/experimental activities. įlights operating at aerodromes (in lieu of codes 1200, 2000 or 3000 when assigned by ATC or noted in the Enroute Supplement). Īssigned for VFR traffic under Flight Information Services (BXL FIC). (VFR squawk code for airspace above 5,000 feet (1,500 m) – prior to 15 March 2007 when replaced by the international 7000 code for VFR traffic.) (VFR squawk code for airspace 5,000 feet (1,500 m) and below prior to 15 March 2007 when replaced by the international 7000 code for VFR traffic.) Internal ARTCC subsets assigned by Enroute Safety and Operations Support. Non-discrete mode A code shall not be used. Transponder codes shown in this list in the color RED are for emergency use only such as an aircraft hijacking, radio communication failure or another type of emergency. There also are standard transponder codes for defined situations defined by the International Civil Aviation Organization (marked below as ICAO). Such generic codes are specified in that country's Aeronautical Information Manual or Aeronautical Information Publication. Occasionally countries may specify generic codes to be used in the absence of an allocated code. Pilots are normally required to apply the code, allocated by air traffic control, to that specific flight. The list is retained for historic interest. Traditionally each country has allocated transponder codes by their own scheme with little commonality across borders. The following list shows specific aeronautical transponder codes, and ranges of codes, that have been used for specific purposes in various countries.
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