__NOTOC__ The Ahrens AR 404 was a prototype American civil transport aircraft first flown in

1976 Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 ...

, a high-wing

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. ...

engines. In order to facilitate the loading and unloading of cargo, the

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraf ...

was of constant rectangular section along almost its entire length, the main undercarriage was retracted into

sponson Sponsons are projections extending from the sides of land vehicles, aircraft or watercraft to provide protection, stability, storage locations, mounting points for weapons or other devices, or equipment housing. Watercraft On watercraft, a spon ...

s on the fuselage sides, and the tail included a loading ramp. As a regional airliner, the AR 404 was designed to carry 30 passengers, or in its cargo configuration, to accommodate four standard D3 freight containers. Ahrens secured a production deal with the government of

Puerto Rico Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and unincorporated ...

, which agreed to finance the

type certification A type certificate signifies the airworthiness of a particular category of aircraft, according to its manufacturing design (''type design''). It confirms that the aircraft of a new type intended for serial production, is in compliance with applic ...

of the aircraft if Ahrens would establish its production facilities there. The first production aircraft was built and flown there on October 26, 1979, but no more were constructed after financing was withdrawn.

Specifications

References

* * {{DEFAULTSORT:Ahrens Ar 404 AR 404 1970s United States airliners 1970s United States cargo aircraft Four-engined tractor aircraft High-wing aircraft Four-engined turboprop aircraft Abandoned civil aircraft projects of the United States Aircraft first flown in 1976

Specifications

See also

References