It features a single main rotor, a single-seat open cockpit without a windshield, tricycle landing gear without wheel pants and a four-cylinder, liquid-cooled, four-stroke, single-ignition 110 hp (82 kW) Subaru EA81 automotive engine in pusher configuration.
[1] The aircraft fuselage is made from welded 4130 steel tubing with some aluminum parts.
With full fuel of 12 U.S. gallons (45 L; 10.0 imp gal) the payload for the pilot and baggage is 368 lb (167 kg).
The Eagle TT has higher landing gear allowing the engine to be placed on the vertical center of gravity which eliminates pitch changes with throttle application.
[1] The Eagle won Most Outstanding Design at the 1992 Popular Rotorcraft Association annual convention in Brookville, Ohio, United States.