A jet bridge (also termed jetway,[1] jetwalk, airgate, jetty, gangway, aerobridge/airbridge, finger, skybridge, airtube, expedited suspended passenger entry system (E-SPES), or its official industry name passenger boarding bridge (PBB)) is an enclosed, movable connector which most commonly extends from an airport terminal gate to an airplane, and in some instances from a port to a boat or ship, allowing passengers to board and disembark without heading outside and being exposed to harsh weather.[2] Depending on building design, sill heights, fueling positions, and operational requirements, a jet bridge may be fixed or movable, swinging radially, or extending in length.[2] The jetway was invented by Frank Der Yuen.[3]
Similar devices are used for astronauts to enter spacecraft, which are installed at the appropriate height of the launch tower.