What does the term "squawk" refer to?

The term "squawk" specifically refers to the action of setting a transponder code for identification on Air Traffic Control (ATC) radar. When a pilot is instructed to "squawk" a particular code, it means they need to input that numeric code into the aircraft's transponder. This transponder is crucial for radar identification, as it allows air traffic controllers to accurately track and identify the aircraft within their airspace. The unique code helps in differentiating your flight from others and enhances safety by facilitating communication and situational awareness.

Understanding this term is vital for pilots because it is a fundamental aspect of transponder operation, which is essential for maintaining proper air traffic control protocols and ensuring safe separation between aircraft.