N639AX

N639AX is a Dassault Aviation Mirage F1, a single-engine jet operated by AIRBORNE TACTICAL ADVANTAGE COMPANY LLC. SkyMeter has tracked 730 flights totalling 1,019 hours of airtime via ADS-B across 28 callsigns. The most frequent segment is KLUF to KLUF. Service window in our records spans 431 days. Of those flights, 310 (42.5%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Dassault Aviation Mirage F1 has a maximum takeoff weight of 35,715 lb, medium wake category.

About the Dassault Aviation Mirage F1

The Dassault Mirage F1 is a French-designed single-engine supersonic fighter that entered service in 1973 as a smaller, more affordable complement to the delta-winged Mirage III. Unlike its predecessor, the F1 adopted a conventional swept wing and horizontal tail configuration, giving it superior low-speed handling and short-field performance while retaining Mach 2+ capability at altitude. Over 720 were built for France and export customers across Europe, Africa, and the Middle East, serving primarily as an interceptor and ground-attack platform through the Cold War and beyond.

The type saw extensive combat in the Iran-Iraq War, the Gulf War, and various African conflicts, proving itself a rugged and versatile multirole fighter. Its SNECMA Atar 9K-50 turbojet produces 15,873 pounds of thrust with afterburner, enabling a maximum speed of Mach 2.2 and a service ceiling above 65,000 feet. Though retired from French service in 2014, the Mirage F1 found a second career in the United States as a civilian adversary aircraft.

Companies like Airborne Tactical Advantage Company acquired ex-military airframes to provide realistic threat simulation for U.S. and allied forces, replicating the performance envelope of potential adversaries in air combat training exercises. These contractors operate the jets under civilian registration, flying dissimilar air combat training sorties that challenge fighter pilots with the F1's high thrust-to-weight ratio and tight turning radius.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.