Weight limits are critical for the flight. An overweight plane can fail to take off. The more weight in passengers a plane carries, the more weight in fuel they need to add. This extra fuel weight also requires more fuel to carry it. And so on and so on.
There’s a tipping point with weight of passengers and cargo combined with flight duration where the plane becomes uneconomical to fly. Planes have crashed on takeoff because they were overweight but the weight was miscalculated. Temperature and weather also play a role.
Weight limits are critical for the flight. An overweight plane can fail to take off. The more weight in passengers a plane carries, the more weight in fuel they need to add. This extra fuel weight also requires more fuel to carry it. And so on and so on.
There’s a tipping point with weight of passengers and cargo combined with flight duration where the plane becomes uneconomical to fly. Planes have crashed on takeoff because they were overweight but the weight was miscalculated. Temperature and weather also play a role.