The Beechcraft Model 76 Duchess is an American twin-engine monoplane built by Beechcraft intended partly as a low cost introduction to twin-engine aircraft. The Duchess is an all-metal low-wing monoplane with retractable tricycle landing gear and a T-tail. It seats four. The design used components and the bonded wing construction from Beechcraft’s single-engine Musketeer line. The basic fuselage and wing structure was adapted from the Model 24 Sierra, a Musketeer variant with retractable landing gear, but the Sierra wing spar was redesigned to support the added weight of the engines. Nose landing gear from the A36 Bonanza was used.

 

Specifications – 

Engine Manufacturer – Avco Lycoming 

Engine Model Number – O-360-A1G6B (Clockwise and counterclockwise)

Engine Horsepower and Speed – 180 HP each at 2700RPM

 

Approved Fuel Grades – 

1. Aviation Gasoline

2. 100 Grade Aviation Fuel (Green)

3. 100LL Grade Aviation Fuel (Blue)