Archedyne has redesigned its Amjet 400 single-engined amphibian business aircraft, changing the name, the number of engines and fuselage length.

Now dubbed the Nautic Air 450, the aircraft will be powered by two Williams FJX-2s when they enter the market next year, and its 12.2m (40ft) fuselage has been extended by 1.5m to allow seating for two extra passengers.

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"We are switching the single AlliedSignal TFE731-20 turbofan for two FJX-2s without suffering a weight or a cost penalty," says Archedyne chief executive Dr Leonard Gioia. "With virtually two engines for the price of one, we also get 950lb [4.2kN] more thrust."

The company, based in Merritt Island, Florida, formerly known as Amjet, will also extend the Nautic Air's range from 2,200km (1,200nm) to 3,330km. "The single-pilot, eight-seat passenger aircraft is in a class of its own," says Gioia. "There is nothing else like it - we now have to find the money to build it."

Archedyne says that it is close to securing about $50 million - enough to build the proof of concept aircraft, which it plans to manufacture within six months of the start of the programme. "We need around $200 million to fund the entire programme and get the first production aircraft out of the door," says Gioia.

The company hopes to make a profit by the 120th aircraft sold. "We have to sell 17 aircraft a year over seven years to break even," explains Gioia.

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Archedyne continues to eye potential production bases in the region, citing the former 8,360m2 (90,000ft2) Boeing missile factory in Brevard County, Florida, a possible choice.

The new aircraft will be priced at between $4 million and $4.2 million - double the cost of the original single-engined Amjet 400.

Source: Flight International