Mounted on a lightweight, easily towed chassis, the variable height UCAS XXL Engineering and Maintenance Access Steps were designed for cowling, pylon and windscreen access, as well as for general maintenance tasks on Airbus A330, A350, A380, and Boeing B777 & B787 aircraft. The top platform height can be adjusted from 3.25m – 5m by hand. The stairs are easy to maneuver and adjust by one person, in full compliance with European standards and legislation.