When must all Jumpers be seated on board the aircraft with helmets on and seat belts fastened?

All jumpers must be seated on board the aircraft with helmets on and seat belts fastened at station time. This timing is critical as it ensures the safety of all personnel during the final preparations before takeoff. By requiring jumpers to be secured at station time, it establishes a uniform safety protocol that helps prevent injuries and distractions while the aircraft is preparing for departure. This protocol allows for orderly management within the aircraft and ensures that all jumpers are accounted for and ready for the jump sequence as the aircraft transitions to the takeoff phase.

Preparing jumpers during this time is essential, as it allows them to mentally and physically get ready while still following safety measures as the aircraft is on the ground and prior to any movement. Thus, the requirement reinforces the importance of safety and operational efficiency in aviation and jump operations.