Plain English Meaning

The other qualified pilots or flight personnel sharing the cockpit with you. They are part of how you stay aware of what the aircraft is doing and where it is going.

Full Definition

In multi-crew flight operations, the pilots and qualified flight personnel working alongside the pilot flying, including the pilot monitoring (or pilot not flying), flight engineer, relief pilots, and any other certificated crew assigned to operational duties on the flight deck. In the context of situational awareness, these are the people whose communication, cross-checking, and feedback the pilot relies on to confirm aircraft , , and intentions.