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The open apron terminal is the oldest and simplest airport terminal design. In this layout, aircraft park directly on the apron next to the terminal building. Passengers then walk across the apron to board the aircraft using mobile steps. Aircraft typically maneuver into and out of parking positions under their own power. This design is most suitable for smaller airports or those with less traffic, as it can become impractical with a large number of passengers needing to cross the apron.1

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