Ryan Airfield (RYN) is a general aviation airport located appx. 10 miles southwest of Tucson at the intersection of West Valencia Rd. and Ajo Way (State Route 86). Ryan occupies over 1,804 acres, and serves as a general aviation reliever airport for Tucson International Airport.
More than 300 aircraft are based at the field and 30 tenants ranging from aircraft maintenance shops to charters and flight instruction facilities, provide a variety of services. A self-service fuel pump is located adjacent to the Administration Building.
The airfield has a manned aircraft control tower and became part of the Federal Contract Tower Program in 1993. The tower recently celebrated two million operations with no errors.
In 2004, the Federal Aviation Administration commissioned a Standard Terinal Automation Replacement System (STARS). The system is used to assist air traffic control services, including separation and sequencing of air traffic and traffic alerts.
In 2005, a new Administration Building opened on West Ajo and includes a pilot briefing room and lounge, restrooms, and conference facilities.