A sturdy rigorous ladder that provides unparalleled stable working access to the upper fan cowl area of the Boeing 777 and 787 aircraft. This ergonomically designed ladder is made in the USA and features powder coated yellow handrails above and an industrial quality 6061-grade aluminum support frame below. ANSI 14.2 approved, OSHA 300 lb. rated A-1 Special Duty. Rubber padding on back rails and treads protects sensitive aircraft parts and rubber bumpers protect the ladder in case of falls. Easily maneuvered by one person by rolling on solid rubber wheels.