应答机代码列表

以下列表展示了在各个国家或地区用于特定目的之航空器应答机代码和代码范围。传统来说，每个国家都通过自己的方案分配转发器代码，不同国家的代码几乎没有共同点。该列表由于历史兴趣而被保留。

飞行员通常需要将空中交通管制分配的代码应用于特定的航班。有时，国家可能会指定在没有分配代码的情况下使用的通用代码。此类通用代码在该国的航空情报手册或航行资料汇编中指定。对于国际民用航空组织（ICAO）定义的特定情况，有标准应答器代码。

下列列表中，以红色显示的应答器代码仅用于紧急情况，例如飞机劫持、无线电通信故障及機上發生緊急狀況等。
代码国家/地区用途0000欧洲Non-discrete mode A code; shall not be used.英国Mode C or other SSR failure美国Should never be assigned.Military intercept code.Internal ARTCC subsets assigned by Enroute Safety and Operations Support. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)0021德国(VFR squawk code for airspace  and below prior to 15 March 2007 when replaced by the international 7000 code for VFR traffic.)0022德国(VFR squawk code for airspace above  – prior to 15 March 2007 when replaced by the international 7000 code for VFR traffic.)0025德国Parachute dropping in progress.0033英国Parachute dropping in progress.0041–0057比利时Assigned for VFR traffic under Flight Information Services (BXL FIC).0100澳大利亚Flights operating at aerodromes (in lieu of codes 1200, 2000 or 3000 when assigned by ATC or noted in the Enroute Supplement).0100–0400美国Allocated to Service Area Operations for assignment for use by Terminal/CERAP/industry/unique purpose/experimental activities.0100–0700美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.美国Also for use in oceanic airspace unless another code is assigned by ATC.0500, 0600, 0700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1000加拿大Instrument Flight Rules (IFR) flight below 18,000 ft ASL when no other code has been assigned.ICAONon-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.美国Used exclusively by ADS-B aircraft to inhibit mode 3A transmission.美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. Also for use in oceanic airspace unless another code is assigned by ATC (美国).美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1100美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1200澳大利亚Civil VFR flights in class E or G airspace.加拿大, 美国Visual flight rules (VFR) flight standard squawk code used in North American airspace when no other has been assigned or is applicable.1201美国Assigned via FAR 93.95 for use by VFR aircraft in the immediate vicinity of LAX.美国(Visual flight rules (VFR) glider operations for gliders not in contact with ATC, through February 2012.)1202美国Visual flight rules (VFR) glider operations for gliders not in contact with ATC; effective February 2012.加拿大Visual flight rules (VFR) glider operations for gliders not in contact with ATC; effective February 2017.1203–1272美国Discrete 1200 series codes unless otherwise allocated (for example, 1255), designated for DVFR aircraft and only assigned by a flight service station.1255美国Aircraft not in contact with an ATC facility while enroute to/from or within the designated fire fighting area(s).1273–1275美国Calibration Performance Monitoring Equipment (CPME) "Parrot" transponders.1276美国Air Defense Identification Zone (ADIZ) penetration when unable to establish communication with ATC or aeronautical facility.1277美国VFR aircraft which fly authorized SAR missions for the 美国AF or 美国CG while enroute to/from or within the designated search area. 1300美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. Also for use in oceanic airspace, unless another code is assigned by ATC.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1400加拿大VFR flight above 12,500' ASL when no other code has been assigned.日本VFR flight above 10,000' MSL when no other code has been assigned.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1500美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subset. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)1600, 1700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)2000澳大利亚Civil IFR flights in class G airspace.加拿大Uncontrolled IFR at or above 18,000 ft MSL.ICAO countriesCode squawked when entering a secondary surveillance radar (SSR) area from a non-SSR area used as uncontrolled IFR flight squawk code.EASA countriesCode that pilot shall set in the absence of ATS instructions related to code setting, unless when not receiving air traffic services.美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2. Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)2100澳大利亚Ground testing by aircraft maintenance staff.美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.美国Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)2200, 2300, 2400美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.美国Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)2500, 2600, 2700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)3000澳大利亚Civil flights in classes A, C and D airspace, or IFR flights in class E airspace.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)3100, 3200, 3300, 3400, 3500, 3600, 3700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)4000澳大利亚Civil flights not involved in special operations or SAR, operating in class G airspace in excess of 15NM offshore.美国Aircraft on a VFR Military Training Route or requiring frequent or rapid changes in altitude.美国Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2.美国Also for use in oceanic airspace unless another code is assigned by ATC.美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)4100美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)4200, 4300美国Internal ARTCC subsets assigned by Enroute Safety and Operations Support. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)4400–4477美国Reserved for use by SR-71, YF-12, U-2, B-57, pressure suit flights, and aircraft operations above FL600.4401–4433美国Reserved in accordance with FAA Order JO 7110.67 (Federal Law Enforcement).4434–4437美国Weather reconnaissance, as appropriate.4440,4441美国Operations above FL600 for Lockheed/NASA from Moffett Field.4442–4446美国Operations above FL600 for Lockheed from Air Force Plant 42.4447–4452美国Operations above FL600 for SR-71/U-2 operations from Edwards AFB.4453美国High balloon operations: National Scientific Balloon Facility in Palestine, Texas; and other providers, some in international operations.4454–4465美国Air Force operations above FL600 as designated in FAA Order 7610.4.4466–4477美国Reserved in accordance with FAA Order JO 7110.67 (Federal Law Enforcement).4500, 4600, 4700美国Internal ARTCC subsets assigned by Enroute Safety and Operations Support. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)5000澳大利亚Aircraft flying on military operations.美国, 加拿大Reserved for use by NORAD.5061–5062, 5100, 5200美国Reserved for special use by Potomac TRACON.5100, 5200, 5300, 5500美国Internal ARTCC subsets assigned by Enroute Safety and Operations Support. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)5100–5300美国May be used by DOD aircraft beyond radar coverage but inside 美国 controlled airspace with coordination as appropriate with applicable Area Operations Directorate.5400美国, 加拿大Reserved for use by NORAD.5600, 5700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)6000澳大利亚Military flights in class G airspace.美国External ARTCC subset. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)6100美国, 加拿大Reserved for use by NORAD.6200, 6300美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)6400美国, 加拿大Reserved for use by NORAD.6500, 6600, 6700美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)7000ICAOVFR standard squawk code when no other code has been assigned.EASA countriesCode that pilot shall set when not receiving air traffic services, unless otherwise prescribed by the competent authority.美国External ARTCC subset. (Block of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)澳大利亚Unmanned aerial vehicle in all classes of airspace and when instructed to enable transponder.7001FranceUsed in some countries to identify VFR traffic.英国Sudden military climb out from low-level operations.7004英国Aerobatic and display code in some countries.7100, 7200, 7300美国External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.)Switzerland7100 in Switzerland for SAR (REGA).7400美国, 英国, 澳大利亚Unmanned aerial vehicle lost link.Australian AIP ENR 1.6 para 6.4.67500ICAO飞机被劫持7501–7577美国Reserved for use by Continental NORAD Region (CONR).7600ICAO飞机通讯故障7601–7607美国Reserved for special use by FAA.7610–7676美国External ARTCC subset (block of discrete codes).7615澳大利亚Civil flights engaged in littoral zone surveillance.7700ICAO飞机遭遇紧急情况7701–7707美国Reserved for special use by FAA.7710–7776美国External ARTCC subset (block of discrete codes).7777美国, 德国, 比利时, 荷兰Non-discrete code used by fixed test transponders (RABMs) to check correctness of radar stations (BITE).美国DOD interceptor aircraft on active air-defense missions and operating without ATC clearance in accordance with FAA Order 7610.4.

參考資料

Category:航空电子学
Category:编码
Category:航空代碼列表