Used to service main engine fan cowl with top rest support. OSHA rated 300-lb special duty. Exceeds ANSI 14.2 specifications. Aluminum ladder with 6061-grade aluminum pylon support and yellow safety handrails. Rolls easily on commercial grade wheels. Replaceable brass feet allow sliding on concrete and / or apron surfaces. Rubber padding on back rails and treads protects aircraft surfaces from damage. Rubber bumpers on side protect ladders from accidental dropping on concrete or pavement surface. Equipped with two LockNStands to provide durable comfort for extended standing. Do Not Stand stickers placed above safe standing area. Stickers indicate OSAH/ANSI 14.2 compliance.