NMC-Wollard Model CMPS-170 narrow body passenger stair services aircraft door sill heights from 77.5" m to 1.97 m to 170.5" to 4.3 m. This ramp-friendly mobile stair give operators access to a variety of aircraft from F-100 to B-767. The easy-to-position CMPS-170 features an unobstructed operator's station (aircraft doorsill is clearly visible during vehicle approach to fuselage). The recognizable NMC-Wollard wrap-around rolled steel bumper offers minimal chassis maintenance and durability in the ramp environment. Available in gas, diesel, and electric (AC/DC) the modular engine/transmission configuration makes maintenance and repair fast and simple. Modular gas/diesel power pack can also be field retrofitted to electric (AC/DC).