Aerobatic maneuvers involving spins or stalls are prohibited when fuel imbalance exceeds what amount?

Aerobatic maneuvers involving spins or stalls are prohibited when the fuel imbalance exceeds 50 pounds due to the potential instability it can create in the aircraft's flight characteristics. An imbalance in fuel can affect the center of gravity (CG), which is critical for maintaining control during aerobatic maneuvers. When the CG is not within the acceptable limits, the aircraft may behave unpredictably, increasing the risk of loss of control during high-stress maneuvers like spins or stalls.

Maintaining a fuel imbalance of 50 pounds or less ensures that the aircraft can handle the aerodynamic loads associated with aerobatics more reliably, allowing the pilot to perform maneuvers safely. This figure is generally established based on safety guidelines and operational practices in order to enhance the aircraft's stability and control when performing complex and demanding flying tasks.