What is 7700 squawk?

Setting a squawk of 7700 on the transponder shows that the aircraft is presently dealing with an emergency. The pilot can set it proactively or at air traffic control's request following a 'pan' or 'mayday' call.



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Squawking 7700 in an emergency The most well know of these is the code 7700. This is used to indicate an emergency of any kind. A pilot will enter this when in an emergency situation - either instructed by ATC after declaring an emergency or without communication if there is no time.

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Code 7700. This is the code for a general emergency. 7700 can be entered into the transponder for a variety of reasons, and some of the most common include medical emergencies, engine failure, problems with pressurization or landing gear, issues with flight control, and more.

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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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If you're already in communication with ATC, you shouldn't squawk 7700 unless the controller tells you to do so. However, if you're not in communication with ATC, squawking 7700 while transmitting on 121.5 is a quick way to get help.

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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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“Squawk 1234” means to just dial 1234 into your transponder. The ATC radar will show the controller that number in the tag associated with your plane. If the tell you, “squawk 1244 and ident”, you should put in the code first, and then press and release the Ident (or ID) button on the transponder.

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7777 is the transponder code for fighter jets carrying out an “active air defense mission”, i.e. an emergency interception.

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Squawk 1000 is a code assigned by air traffic control to indicate that an aircraft is experiencing an emergency.

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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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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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The squawk code 7500 is an emergency code used by pilots to inform ATC of a plane hijacking taking place, which means that the pilots have either been forced to change course or are no longer in control of the aircraft.

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Squawk 7000: This is the 'conspicuity code' for VFR aircraft that are not assigned a specific code by ATC. Squawk 2000: This is the 'conspicuity code' for IFR aircraft that are not assigned a specific code by ATC.

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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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By squawking 7600 (lost communications squawk code), ATC will know you've had a communications failure. Even if you weren't talking to ATC before, they'll notice you now if you're in a radar covered area.

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