What is hot refueling?

Hot refueling is an operational procedure where aircraft are refueled while their engines are still running. This technique is often used in military operations to minimize downtime and ensure that aircraft can quickly return to flight missions without having to shut down and restart the engines. By performing refueling while the engines are operational, crews can enhance the efficiency of their operations, particularly in high-tempo situations where every second counts.

In contrast, the other options pertain to different aspects of aircraft readiness and maintenance but do not accurately define hot refueling. For instance, performing inspections or routine checks before takeoff ensures safety and compliance with regulations, but these processes do not involve refueling with engines running. Similarly, rearming tactics focus on equipping aircraft with munitions after missions, which is distinct from the refueling process. Understanding the specific definitions and protocols involved in military aviation operations is crucial for effective mission planning and execution.