Military sales prospects included the Mexican Navy, but no orders were forthcoming.
[3][4] The Sentry is a two-seat development of the four-seat Lancair IV, with the door-accessed cabin replaced by a canopy.
[1][3][4][5] The aircraft features a cantilever low-wing, a two-seats-in-tandem enclosed cockpit under a rear-hinged bubble canopy, retractable tricycle landing gear and a single engine in tractor configuration.
[1] The aircraft is made from composite materials, predominantly carbon fiber reinforced polymer.
The standard engine used is the 708 hp (528 kW) Walter M601D turboprop powerplant powering an American 82 in (208.3 cm) three-bladed Hartzell Propeller or a Czech 84 in (213.4 cm) Avia Propeller.