What is the required seat occupancy for ATP students during training flights, except for certain conditions?

The required seat occupancy for ATP students during training flights typically mandates that students occupy the left seat for all training flights. This is because the left seat is generally designated for the pilot-in-command and serves as the primary control position in many aircraft. During training, it's crucial that students gain experience operating from the left seat, which helps them develop the necessary skills and confidence that are essential for pilot certification and subsequent flying responsibilities.

In specific scenarios, like solo flights where a student may operate the aircraft without an instructor, the requirement may shift to accommodate safety and instructional needs. However, in dual training flights—the standard practice for most of the training period—the left seat designation allows students to engage directly with the flight controls and develop their piloting skills effectively under the supervision of an instructor in the right seat.