Oct 8, 2015 · We take a look at what happens when a crew resets their transponder to the emergency code of 7700 - squawking 7700 , and what types of emergencies it's used. Oct 8, 2015 · We take a look at what happens when a crew resets their transponder to the emergency code of 7700 - squawking 7700 , and what types of emergencies it's used. 1 day ago · Flightradar24 (@ flightradar24 ). A US Air Force C-17 is squawking 7700 near Qatar. 1 day ago · Flightradar24 (@ flightradar24 ). A US Air Force C-17 is squawking 7700 near Qatar. Squawk 7700 is the transponder code used by pilots to indicate a general emergency. By enabling alerts for this code, you are notified immediately if an aircraft declares an emergency, which is critical for understanding and responding to aviation safety events. Squawk 7700 is the transponder code used by pilots to indicate a general emergency. By enabling alerts for this code, you are notified immediately if an aircraft declares an emergency, which is critical for understanding and responding to aviation safety events. This post appears to be about an aircraft squawking 7700 . Usually, these are not immediately life threatening situations and not indicative of an aircraft going down. This post appears to be about an aircraft squawking 7700 . Usually, these are not immediately life threatening situations and not indicative of an aircraft going down. Mar 13, 2017 · A 7700 squawk simply means the crew has an abnormal situation that requires priority attention from ATC .