The NAMC YS-11 is a turboprop airliner built by a Japanese consortium, the Nippon Aircraft Manufacturing Corporation. The program was initiated by the Ministry of International Trade and Industry in 1954: the aircraft was rolled out in 1962, and production ceased in 1974.

To date, the YS-11 is the only successful commercial aircraft made by a Japanese firm. 182 were produced in total. Although most of the aircraft was designed and manufactured in Japan, the engines were built by Rolls-Royce.

The twin-engined YS-11 delivered similar operational performance to the four-engined Vickers Viscount, and had 50% more capacity than the similarly-configured Fokker F.27.

Operators

• Aerolineas Argentinas
• Air Nippon
• All Nippon Airways
• Austral Airlines
• China Airlines
• Cruzeiro
• Greek Air Force
• Japan Air System
• Japan Domestic Airlines
• Japan Self-Defense Forces (Air and Maritime)
• Olympic Airways
• Piedmont Airlines
• Southwest Air Lines Japan
• Toa Domestic Airlines
• VASP
• Asian Spirits

Specifications

• Engines: Two Rolls-Royce Dart turboprops, each rated 3,000 horsepower (2,200 kW)
• Wingspan: 105 ft (32 m)
• Fuselage: 86 ft (26 m)
• Dry weight: 31,000 lb (15,500 kg)
• Maximum takeoff weight: 54,000 lb (24,500 kg)
• Airspeed: 250 knots (470 km/h)
• Operating range: 680 miles (1,100 km)
• Passengers: 64

External links

• YS-11 photographs by Tony Hara