What should pilots do if they find their aircraft is overloaded?

When pilots discover that their aircraft is overloaded, the appropriate course of action is to redistribute the load. Proper weight distribution is crucial for maintaining the aircraft's balance and handling characteristics. If the load is not distributed correctly, it can lead to adverse flight conditions, such as difficulty in controlling the aircraft, increased stalling speed, and potentially dangerous flight characteristics during maneuvers.

Redistributing the load allows pilots to shift weight so that it is within the aircraft's specified limits and ensures the center of gravity remains within accepted parameters. This may involve moving passengers, cargo, or equipment to different locations to maintain balance and achieve safe flight conditions.

The other choices present alternatives that do not effectively address the issue of overload. Proceeding with the flight despite knowing the aircraft is overloaded can lead to significant safety risks. Increasing speed is not a viable solution, as it does not rectify the fundamental issue of weight overload. Removing only fuel may not be sufficient to correct the situation, as the distribution of weight may still not comply with safe operating limits. Therefore, redistributing the load remains the best and safest option.