During which phase does the aircraft move forward under its own power after push-back?

The phase where the aircraft moves forward under its own power after push-back is known as taxiing. During this phase, the aircraft is received from the push-back area and begins to move to the runway or taxiway for takeoff. This movement occurs on the ground when the plane uses its engines to navigate to the appropriate position for departure.

Taking off refers to the phase where the aircraft accelerates to a speed sufficient to become airborne, which happens after the taxiing phase is completed. Landing, on the other hand, is the process of the aircraft descending onto the runway after completing its flight. The term secure typically refers to procedures concerning the cabin and passengers preparing for takeoff or landing, not the movement of the aircraft itself. Thus, the correct phase for the aircraft moving forward under its own power following push-back is taxi.