Beechcraft Be-76 “Duchess”The Beechcraft Be-76 “Duchess” is a four seat, low-wing, twin-engine “complex” aircraft, powered by two 180hp engines with constant-speed (variable pitch) propellers, in which the landing gear is retractable. This aircraft is one of the most popular multi-engine training aircrafts. This twin-engine aircraft is used by many flight schools to train students seeking their Multi-Engine Rating, Multi-Engine Instructor Rating, as well as Instrument Rating.