Curiosities
Squawk codes, separation and the odd things you spot on flight trackers. Short answers to questions you were too polite to ask.
All articles: Curiosities
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11 Oct 20261 min read
Squawk 7700: what it means when a flight shows an emergency
You saw a plane flash red on a flight tracker. Here's what squawk 7700 means, why pilots set it and why it's usually less dramatic than it looks.