Under what condition can crewmembers leave their assigned duty station during flight?

Crewmembers are allowed to leave their assigned duty station during flight when their absence is normal in the performance of crew duties. This is often applicable to specific roles within the crew that require them to perform tasks away from their designated positions, such as checking on passenger comfort, conducting safety inspections, or managing cargo.

In particular situations, the duties may necessitate moving away from their primary stations, and standard operating procedures or regulations will outline these circumstances, permitting temporary departures as part of their functions. This ensures that while the flight operations are being conducted, other essential duties related to safety and passenger needs can also be fulfilled.

Other scenarios, such as during breaks or specific operational circumstances like in-flight refueling or flying over water, often have stricter regulations and may not allow for crewmember departures from their stations due to safety concerns and operational integrity.