Initial Central and West United States - (Enroute Low Service) for Arkansas, Arizona, California, Colorado, Iowa, Idaho, Illinois, Indiana, Kansas, Louisiana, Michigan, Minnesota, Missouri, North Dakota, Nebraska, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin and Wyoming. Flight operations above FL180 within the USA required USAHI or USAHS. Coverage fits in one 2-inch binder, which is sold separately. Note : Approach plates not included.