Editing Jet bridge (section)

==Advantages==
Jet bridges provide all-weather dry access to aircraft and enhance the security of terminal operations. They are often permanently attached at one end by a pivot (or rotunda) to the terminal building and have the ability to swing left or right. The cabin, at the end of the loading bridge, may be raised or lowered, extended or retracted, and may pivot, to accommodate aircraft of different sizes.<ref name=Gesell /> These motions are controlled by an operator's station in the cab. The cab is provided with an accordion-like [[Aircraft canopy|canopy]], which allows the bridge to dock with aircraft with differing shapes, and provide a nearly weather-proof seal. Additionally, many models offer leveling devices for the portion of the floor that makes contact with the aircraft; this allows passengers to slowly transition from level aircraft floor to sloping jet bridge floor. As such, jet bridges provide enhanced access to aircraft for passengers with many types of [[disabilities]] and [[mobility impairment]]s, as they may board and disembark without climbing stairs or using a specialized [[wheelchair lift]].

Some airports with international gates have two or even three bridges for larger aircraft with multiple entrances. In theory, this allows for faster disembarking of larger aircraft, though it is quite common, especially on aircraft such as [[Boeing 747]]s and [[Boeing 777]]s, to use one bridge for only passengers in [[First class travel|first class]] and/or [[business class]], while the other bridge is for the use of passengers in [[economy class]]. In some designs, the second jet bridge would even extend over the aircraft wing, being suspended from an overhead structure. This was, for example, originally adopted for most wide body gates at [[Amsterdam Airport Schiphol]]. The [[Airbus A380]] is unique in that both of its two passenger decks have outside access doors and so using loading bridges for each deck is possible, having the advantage of faster aircraft loading (in parallel). Faster loading can lead to lower airport charges, fewer delays and more passenger throughput for the airport, all factors which impact an airline's [[net income|bottom line]].

Though loading bridges are usually permanently attached at their terminal-building end, leaving only the cab free to move, this is not always the case. Those at [[Melbourne Airport]]'s international terminal, and at [[Hong Kong]]'s former [[Kai Tak Airport]], are anchored in the middle and movable at either end to permit the terminal building-end to be raised or lowered to connect with either the departures level or the arrivals level of the terminal building.