A terminal (14) for an airport (13) includes multiple servicing levels
(82, 102). A ground support service sub-system is coupled to the
servicing levels (82, 102) and is configured to mate with a service
opening (26) of the aircraft (12). The ground support service sub-system
provides services to the aircraft (12) through the service opening (26)
and on the servicing levels (82, 102).