If you have ever tracked a flight online and watched it suddenly turn red with the label "7700," you may have felt a jolt...

If you have ever tracked a flight online and watched it suddenly turn red with the label "7700," you may have felt a jolt of worry. That four-digit number is called squawk 7700, and it is one of the most important codes in the entire aviation world. It is not something pilots use lightly, and it is not something that happens every day. When squawk 7700 shows up on a radar screen, everyone on the ground air traffic controllers, airport staff, and emergency crews instantly understands that a plane needs help right now. This article breaks down exactly what squawk 7700 means, why pilots use it, and what happens after it is set. We will look...

If you have ever tracked a flight online and watched it suddenly turn red with the label "7700," you may have felt a jolt of worry. That four-digit number is called squawk 7700, and it is one of the most important codes in the entire aviation world. It is not something pilots use lightly, and it is not something that happens every day. When squawk 7700 shows up on a radar screen, everyone on the ground air traffic controllers, airport staff, and emergency crews instantly understands that a plane needs help right now. This article breaks down exactly what squawk 7700 means, why pilots use it, and what happens after it is set. We will look...