When must a prisoner board an aircraft compared to other passengers?

Prisoners must board an aircraft before any other boarding passengers to ensure the secure handling of individuals in custody. This procedure is crucial for managing the safety of all passengers on the flight as well as the security personnel responsible for the prisoners. By boarding prisoners first, the aircraft's crew and security staff can effectively establish protocols to monitor, control, and safely manage the situation before allowing other passengers to enter the aircraft.

Additionally, boarding prisoners ahead of other passengers minimizes the risk of potential conflicts or disturbances during the boarding process. This practice helps maintain order and control, ensuring that the rest of the boarding process can unfold smoothly. Security and law enforcement personnel can prepare the cabin and monitor the situation closely, making it safer for all involved.