What is the intent for flight in a helicopter or tilt-rotor?

The intent for flight in a helicopter or tilt-rotor is accurately captured when takeoff power is applied. This moment signifies the transition from a stationary ground state to the initial phase of flight. During this phase, the pilot assesses the power being applied to ensure there is sufficient performance to achieve a safe takeoff.

Takeoff power involves managing engine settings, rotor blade angles, and other critical parameters that allow the aircraft to transition from ground to air. It is an essential part of the flight process because it establishes the aircraft's readiness to lift off and maneuver.

While the other choices reference significant events in the operation of a helicopter or tilt-rotor—such as landing for refueling, being in a hover state, or when all crew members have boarded—none of these events encapsulate the intent for flight as succinctly as the application of takeoff power. The act of applying this power reflects the pilot’s proactive intention to ascend and engage in flight operations.