What should the PNF do to assume control with comms method 1?

To assume control using comms method 1 in the context of safe aircraft operations, the correct approach is to state "You have the aircraft." This verbal communication explicitly conveys to the other pilot that control has been transferred, ensuring clarity and understanding, especially in situations where physical signals may not be as effective due to distractions or visibility issues.

The key point of comms method 1 is to establish a clear, affirmative communication that eliminates any ambiguity regarding who is in control of the aircraft. Verbal communication is critical in aviation to maintain safety and ensure both pilots are on the same page in terms of operational control.

While raising both hands to signal back is a visual cue that can be employed, it does not provide the same level of clarity as a verbal command, particularly in a cockpit environment where quick and clear communication is essential. Vigorously shaking the control stick may indeed attract attention but does not directly communicate the transfer of control in a definitive manner. Keeping hands on the throttle does not convey any message about control transfer and could mislead the other pilot regarding the situation.

Therefore, stating "You have the aircraft" is the most effective and recognized way of assuming control in a flight environment.