When is fuel transfer prohibited?

Fuel transfer is prohibited during takeoff due to safety concerns. This is a critical phase of flight where the aircraft is most vulnerable and any potential issues could lead to catastrophic outcomes. Transferring fuel during takeoff can introduce risk factors such as weight imbalance, changes in center of gravity, and disruptions to fuel flow that could affect engine performance.

In contrast, other phases of flight, such as landing or level flight, may allow for fuel transfer under specific operating conditions where the risks can be managed more effectively. Emergency situations typically necessitate immediate actions to ensure the safety of the aircraft and its occupants, which may include stabilizing the situation rather than engaging in operations that could complicate control or increase hazards.