The military jet, callsign PAGAN, squawked 7700 at around 3.06 pm on Tuesday, indicating a general emergency. Flight trackers hold it is a British jet, and is a British Aerospace Hawk T.2.
Squawk codes are assigned to a flight before departure, with the four digits ranging be between zero and seven – giving 4,096 possible combinations.
Reserved codes are used in particular situations when an aircraft wants to communicate something to Air Traffic Control quickly.
The most well known code is 7700, used to indicate an emergency.
A pilot will enter this when in an emergency situation – either instructed by ATC after declaring an emergency or without communication.
This will clearly inform all tracking ground controllers that the aircraft has an emergency and should be given appropriate assistance.
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