To provide an entrance apparatus for an operator's compartment, preferably for a cockpit of an airplane, that can minimize a space demand and a surface, attain simple constitution with minimized weight and guarantee pressure closed type isolation and a plurality of variable entrances/exits of the entrance apparatus.

A safety sluice 1 is provided in an entrance region. The sluice is formed in cylindrical shape and rotatable within a frame structure body 2 around the vertical axis. The sluice 1 has a sluice entrance 11, and its opening part coincides with at least two entrance/exit sectors 21 of the frame structure body 2. The sluice entrance 11 is travelable to a previously selected sector position and lockable, and at the same time, all other entrance/exit sectors 21 are closed for the entrance/exit.