NMC-Wollard Inc.'s CMPS-170 Stair with a reach up to 170.5 inches (B-767) is available with electric power. Quiet, efficient propulsion system offers a proactive option (diesel- and gas-powered units also available). Highly maneuverable unit is easy to position – operator can see doorsill during approach to the airplane. Makes final docking and alignment simple. Rugged wrap-around steel bumper protects unit from dings and dents inherent with ramp traffic. Model 170 holds up longer in the ramp environment compared to modified pick-ups. Model 170 is designed to ARP 836 and shares design elements and parts commonality with several other NMC-Wollard products. Helps simplify fleet maintenance and reduces parts inventory.