N139J

N139J is an Alligatair, a single-engine piston aircraft operated by KITA THOMAS J JR. SkyMeter has tracked 38 flights totalling 44 hours of airtime via ADS-B. The most frequent segment is KX04 to KSFB. Service window in our records spans 243 days. The Alligatair has a maximum takeoff weight of 1,320 lb, light wake category.

About the Alligatair

The Alligatair is a French-designed light sport amphibious aircraft that brings seaplane capability to the ultralight category. Built by Alligatair in France, this single-engine pusher-configuration aircraft entered production in the early 2000s as one of the few factory-built amphibians eligible under light sport aircraft rules in multiple jurisdictions. Its distinctive high-wing layout, retractable landing gear, and composite construction allow operations from both conventional runways and water, making it popular among recreational pilots seeking versatile backcountry and coastal access.

The type's amphibious capability comes from a boat-hull fuselage and electrically retractable tricycle gear that tucks into sponsons when operating as a seaplane. Maximum takeoff weight of 1,320 pounds keeps it within LSA limits in the United States, while its Rotax powerplant—typically a 100-horsepower 912 series engine—provides adequate performance for the mission profile. Cruise speeds around 90 knots and a never-exceed speed of 120 knots reflect its light sport classification, though the aircraft's real appeal lies in access rather than speed.

The Alligatair remains a niche type in North American skies, with most examples operated by individual owners rather than flight schools or commercial operators. Its relatively high acquisition cost compared to land-only light sport aircraft, combined with the specialized skills required for amphibious operations, has kept the fleet small but dedicated. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.