sentences:  The Model M-92 featured a controllable-pitch propeller, flaps, electronically operated retractable landing gear and all-metal skin with fabric-covered rudder, ailerons and elevators.Its unobstructed bubble canopy provided instructors and students seated in tandem with good visibility, and its cockpit instruments were arranged to match those found in contemporary jet fighters.To help students recognize controls, the landing gear handle was in the shape of a small landing gear wheel, and the flap handle was shaped like the airfoil of a flap.