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A gate, or gatehouse, is an area of an airport that provides a waiting area for passengers before boarding their flight. While the exact specifications vary from airport to airport and country to country, most gates consist of seating, a counter, an aircraft entry or exit doorway, and a jet bridge.
At most gates a single doorway opens to a jet bridge which leads to the aircraft door depending on aircraft model. If the gate is being used for departures, domestic arrivals, or international arrivals coming from airports with preclearance for the destination airport, a door that goes to a waiting area will be opened and a hallway to customs will be closed, preventing passengers from entering into the customs hall. For international arrivals that is coming from cities that does not have preclearance, the door leading to the waiting area is closed and passengers are directed to a hallway where they can either go into the customs hall, if they end at that city, or clear customs and pre-board security if they have a connecting flight.
Before the era of the jet bridge or jetway, airline passengers embarked onto the aircraft from ground level via airstairs. If initially indoors, passengers would exit the waiting area through a door to the outside and then passengers would proceed to the airstairs leading to the aircraft door. This method is still used for boarding smaller planes or boarding at smaller airports.
The equipment is either airport or airline property, in most cases airport infrastructure.
Gate at Larnaca International Airport
Gates at Ch?bu Centrair International Airport
Entrance to gates at Hanover/Langenhagen International Airport
Gates B2 and B3 at Asheville Regional Airport
Gates at General Abelardo L. Rodríguez International Airport in Tijuana, Mexico.
Gates in Concourse C of Washington Dulles International Airport