Pilots attend a medical examination, flight briefing, obtain an outbound clearance and do many other things at the airport. See what they usually do in detail.
Pilots enter a service building through a separate entrance in the airport terminal. The airport is divided into two areas - "normally occupied" and "nonoccupied" ones. "Normally occupied" area is an area inside the airport, in order to get there it's necessary to pass checking. All other part of the building is called "Nonoccupied" area.