What is the code 7600 in aviation?

Code 7600 is the code for a loss of radio. If a pilot's radio goes out during a fight, they can enter 7600 into the transponder. Then they should proceed to their intended airport following a standard landing plan. Pilots should be extra careful and on alert for other aircraft around them in the sky.



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An aircraft experiencing a loss of two-way radio communications capability can be expected to squawk Code 7600.

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A Squawk 7700 indicates an emergency. This can be an emergency of any kind. Pilots may input it into the transponder themselves – or when instructed to do so by ATC. As a result, ground control will know that the aircraft is dealing with a serious issue and needs help.

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The 3 Must-Know Aircraft Emergency Squawk Codes For Pilots
  • 7700 – Distress or Urgency Condition. Before we begin discussing emergencies, let's define our terms as listed in the Pilot/Controller Glossary. ...
  • 7600 – Two-Way Radio Communication Failure (NORDO) ...
  • 7500 – Air Piracy (Hijacking or Hostile Acts Onboard)


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If you're below 18,000, feet you'll start by squawking 7600, then descend or climbing to an altitude that is acceptable for VFR cruising. You'll be expected to land as soon as practical while maintaining visual flight rules. If you're above 18,000 feet (Class A airspace) it gets a bit more complicated.

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For example, 1200 in the USA means that the flight is flying under Visual Flight Rules (VFR) and is not typically in direct contact with ATC. 1200 is a shared code so you may see many aircraft transmitting it at the same time in a given area.

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Squawking 7500 signifies an aircraft being hijacked and could result in an aircraft being escorted by military forces.

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Series 20 — Code 2000 is to recognize an aircraft that has not received instructions from the air traffic control units to operate the transponder.

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Military aircraft operating in restricted/warning areas or on VR routes will squawk 4000 unless another code has been assigned or coordinated with ATC.

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The code is applicable to aircraft responding to and operating over fire suppression operations. It is not to be used for repositioning or during cross-country flights. Pilots may select 1255 on their transponder prior to contacting an air traffic control facility.

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“Squawk VFR” or “Squawk 1200” Of course, VFR pilots aren't always talking to controllers. When in Class G or E airspace, they can operate independently without contacting anyone. In these cases, if the plane has a transponder, they set it to the standard VFR code, which is 1200.

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A pilot experiencing two-way radio failure at an assigned altitude of 7,000 feet is cleared along a direct route which will require a climb to a minimum IFR altitude of 9,000 feet, should climb to reach 9,000 feet at the time or place where it becomes necessary (see 14 CFR Section 91.177(b)).

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This notice assigns Code 1202 for use by gliders not in contact with an air traffic control (ATC) facility. The notice also provides general flight characteristics of gliders and some of their limitations.

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