ACCESSAIR's broad range of towable and truck-mounted airstairs are available in crew and parallelogram models, as well as telescoping units. In order to enhance passenger safety and comfort, many models are also available with clearview covers and single or double canopy systems to mate with aircraft and/or airport buses. The dual-canopy system offered as an option on ACCESSAIR's APS airstair offers full protection from the elements during transfer between the aircraft and the airport bus