Application of air cushion landing gear to a commercial transport is considered. An example aircraft based on a modified configuration of a Boeing 737-100 is used to derive weight and cost figures. Effect on take-off and landing field lengths due to use of a suction braking system is analyzed. Comparative safety of ACLS versus wheelgear is argued. It is concluded that an ACLS aircraft can show economic and cost advantage and its operational differences are acceptable within the existing and developing air transport system.