52AZ

Seligman, Arizona, is home to X-1 Ranch Upper Headquarters, a privately owned, non-towered airport identified as 52AZ. The field's sole runway, NW/SE, is a dirt strip 4,800 feet long by 45 feet wide.

Operations are conducted under visual flight rules, as no instrument approach procedures are published. Pilots rely on see-and-avoid procedures for traffic separation at this non-towered field with no published frequencies. No fuel sales are on record here. As a private-use facility, the airport is not open to transient traffic without prior permission.

At 5,585 feet above mean sea level, density altitude becomes a routine consideration during warm weather operations.