Abstract: A hose adapter for use in connecting a preconditioned air hose to an aircraft having a ring connector with a plurality of slots formed therethrough by which a ground-based heating/air conditioning unit is connected to an internal ventilation system of the aircraft. The hose adapter includes a generally hollow housing and slot-engaging arms which connect the housing to a ring connector in a snap-fit manner. The housing includes a lower end having an inlet which is connectable to a preconditioned air hose, and an upper end having an outlet which is connectable to a ring connector of an aircraft. The slot-engaging arms are biased toward a locking position wherein the slot-engaging arms provide a quick connect to a ring connector and an unbiased position wherein the slot-engaging arms releasably disconnect from the ring connector.

Abstract: Pre-conditioned air hoses for aircraft are provided which consists of a plurality of hose segments and a plurality of hook and loop fasteners closure connections interconnecting the hose segments. When the hose segments are assembled, pre-conditioned air can be carried from a ventilating system to the aircraft on the ground before the aircraft is operational and ready for takeoff.