Have you ever gotten bumped because your flight was weight-restricted? I’m sure you have. Do you know what all this means? Here’s my attempt to explain it. The aviation industry started with cargo and then people were added. So as much as we think that people are the reason for flying, its really cargo. More money is usually made from cargo and it does not complain . An airplane is designed with what’s called a maximum takeoff weight (MTOW). This is the combined weight of everything, the plane, baggage, fuel, cargo, people, food, etc., everything.