According to regulations, who must ensure passengers know how to use seat belts properly?

The pilot in command holds the ultimate responsibility for the safety of the aircraft and its occupants, which includes ensuring that all passengers understand how to use seat belts properly. This regulation is rooted in the fundamental principle of safety management in aviation. By making sure that passengers are informed about how to secure their seat belts correctly, the pilot in command helps to reduce the risk of injury during turbulence or in the event of an emergency landing.

The pilot in command acts as the authority on board and is responsible for the overall operation of the flight, including the well-being of passengers, which encompasses pre-flight briefings that cover vital safety procedures. Therefore, it is essential that this responsibility lies with the pilot rather than with others who may not have direct oversight or authority over the entire flight operation.