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Initial Operational Capability (IOC): March 2007
Maiden Flight: December 2003
Total Production: 18
Unitary Cost: USD$110 million
Also Known As: US-1A Kai and US-2I
Origin: Japan
Corporations: ShinMaywa Industries
Parent System: US-1
Initial Operational Capability (IOC): July 1976
Maiden Flight: October 1974
Total Production: 38
Family Members: US-1A
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Description: The ShinMaywa Industries US-1 amphibious aircraft program started in March 1973 as a search and rescue airplane for the Japanese Navy based on the PS-1 amphibious airplane. The US-1 major improvement compared with the PS-1 are legs to land on the ground for ambulance transportation while retaining the amphibious operation capability. The first US-1 test aircraft completed its maiden flight in October 1974. The first production US-1 Short Take Off and Landing (STOL) Search and Rescue amphibian was delivered to the Japanese Defense Agency in March 1975. The Japanese Maritime Self-Defense Force (JMSDF) forced its first US-1 search and rescue squadron in July 1976. These aircraft are only suitable for search and rescue (SAR) and medical evacuation missions.

In 1996 the Japanese Defense Agency took the decision to develop the US-1A Kai which ultimately was re-named as the US-2. The US-2 was conceived as a major modification to the US-1A airframe but with so many improvements it ended more like a brand new aircraft program. The US-2 key features improved flight control during takeoff and landing on water; improved environment for patients during transport; and enhanced open sea search and rescue capabilities. The first flight was carried out in December 2003 and the first US-2 was deployed with a search and rescue squadron in March 2007. At least three airplanes were operational with the JMSDF as of early 2014. In January 2014 India and Japan were negotiating the potential sale of 15 US-2I civilian airplanes.

The US-2 with a seating capacity for 11 persons is powered by four Rolls-Royce AE 2100J turboprop engines each developing 4,591-hp of power and allowing a top speed of 315 knots. The airplane can take off and land on water with a maximum weight of 43.0 tons and on the ground with a maximum weight of 47.7 tons. The US-2 has been designed to operate with wave heights of up to three meters and can land on just 330 meters on water. ShinMaywa Industries has been working on the development of a firefighting and multi-purpose transport aircraft versions.

US-2 Specifications

Crew: 2
Number of Engines: 4
Passengers: 9
Propeller Blades: 6
Height: 9.80 meter (386 inch)
Length: 33.2 meter (1,307 inch)
Wingspan: 33.3 meter (109 foot)
Ceiling: 6,000 meter (19,685 foot)
Landing Run Distance: 1,500 meter (4,921 foot)
Max Range: 4,500 kilometer (2,430 nautical mile)
Take Off Run Distance: 490 meter (1,608 foot)
Max Power at TakeOff: 18,364 hp (13,700 kW)
Cruise Speed: 480 kph (259 KTAS)
Top Speed at High Altitude: 560 kph (303 KTAS)
Max Landing Weight: 47,700 kilogram (105,159 pound)
Max Takeoff Weight: 47,700 kilogram (105,159 pound)
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

Operators & Related Equipment

Jan 20143

Grand Total 182
Propulsion Systems
AE 2100Jx4
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