I. Leaving the Seat in the Cockpit

ln a three man crew complement, a flight crew member can leave his seat and ask the other two members to cover for him. Some major reasons for a cockpit crew member to leave his seat is as follows,

-for biological reasons
-to check the wing before takeoff in times of snow
-manual extension of the nose gear
-to fight fire in the cabin or cargo compartment, make damage assessments and for coordination of communication
-to cope with matters that the cabin crew cannot handle, such as the electrical and oKygen Systems

However, in the case of a two man crew complement, if one man leaves the cockpit, the aircraft completely becomes a one man aircraft.