When is the flight attendant notified to move passengers for weight and balance adjustments?

The flight attendant is notified to move passengers for weight and balance adjustments as needed by the Pilot in Command (PIC). This process is critical for maintaining the safety and performance of the aircraft. The PIC has the responsibility to ensure that the aircraft meets its weight and balance requirements before and during the flight.

If the weight distribution is not optimized due to passenger placement, it can affect the aircraft's center of gravity, impacting performance during takeoff, flight, and landing. The PIC may require adjustments at any point as deemed necessary, depending on various factors such as fuel load, cargo weight, and passenger distribution. This ensures that the aircraft remains within safe operational limits throughout the flight.

Other situations like waiting for all passengers to be seated or only during turbulence do not encompass the broader operational needs for weight and balance adjustments. The need for prompt adjustments can arise at any time, making the flexibility to adapt to the PIC's directives paramount for safety.