Commercial jets use a series of codes via transponder known as Squawk codes, but not all of them are bad. Here's what it means when a jet is Squawking 7700.

What is the meaning behind this particular squawk code?

How often is it used by commercial airline pilots?

Have you ever walked through an airport, seen the departures listings, and wondered how on earth air traffic controllers (ATCs) stay on top of everything? With 45,000 daily flights in the U.S. alone, ...