Simple Flying
What The 4-Digit Code Every Commercial Aircraft Broadcasts Actually Tells Air Traffic Control
There are only 4,096 possible combinations. Let's see what 7500, 7600, and 7700 mean, and how ATC uses them.
Simple Flying
There are only 4,096 possible combinations. Let's see what 7500, 7600, and 7700 mean, and how ATC uses them.