Question: The Cirrus SR22 is a single-engine four- or five-seat composite aircraft built from 2001 by which aircraft, manufacturer of Duluth, Minnesota, that was founded in 1984 by Alan and Dale Klapmeier to produce the VK-30 kit aircraft?
Context: The Diamond D-JET is a composite, five-seat, single-engine jet aircraft developed by Austrian aircraft manufacturer Diamond Aircraft Industries.  The intended cost for the aircraft was advertised by the company as being US$1.89 million dollars in March 2009. The Cirrus Aircraft Corporation (formally Cirrus Design Corporation) is an aircraft manufacturer that was founded in 1984 by Alan and Dale Klapmeier to produce the VK-30 kit aircraft.  The company headquarters is located in Duluth, Minnesota, United States.  As of June 2015, Cirrus had delivered over 6,000 aircraft in 16 years of production, and has been the world's largest producer of piston-powered aircraft since 2013. The Klapmeier brothers, Alan Lee Klapmeier (born October 6, 1958) and Dale Edward Klapmeier (born July 2, 1961), are American aircraft designers and aviation entrepreneurs who together founded the Cirrus Aircraft Corporation in 1984.  Under the leadership of the Klapmeiers, Cirrus was the first aircraft manufacturer to install a whole-plane parachute recovery system as a standard on all its models—designed to lower the airplane (and occupants) safely to the ground in case of an emergency.  The device is attributed with saving over 140 lives to date.  Cirrus was also the first to use all-composite airframe construction and glass panel cockpits on production aircraft, which many say revolutionized general aviation for light aircraft pilots. The Cirrus SR22 is a single-engine four- or five-seat composite aircraft built from 2001 by Cirrus Aircraft of Duluth, Minnesota. The Dornier Seastar is a turboprop-powered amphibious aircraft built largely of composite materials. Developed by of Germany, it first flew in 1984.  The design is owned by Claudius Jr's son, Conrado, who founded Dornier Seawings AG (now Dornier Seawings) to continue work on the project after two previous firms, Claudius Dornier Aircraft and Dornier Composite Aircraft, both went into bankruptcy.  Development of the aircraft was put on hold without any production Seastars being completed in 1991. The Cirrus VK-30 is a single-engine pusher-propeller homebuilt aircraft originally sold as a kit by Cirrus Design (now called Cirrus Aircraft), and was the company's first model. The Dayton-Wright OW.1 Aerial Coupe was an American four-seat touring aircraft built by the Dayton-Wright Company of Dayton, Ohio.  Because it was the last aircraft designed by Orville Wright, the design was given the designation OW.1.  The aircraft was based on a heavily modified De Havilland DH.4.  Although only one was produced, the Dayton-Wright OW.1 marks the first working example of a civilian single-engine four passenger light cabin aircraft. The Synergy Aircraft Synergy is a proposed five-seat, single-engine, kit aircraft, designed by John McGinnis of Kalispell, Montana and intended for production by his company, Synergy Aircraft. The Glasair I, originally built as the prototype Glasair TD taildragger, is a high-performance homebuilt aircraft built of fiberglass.  Created by Tom Hamilton as a fast, two-seat kitplane, the Glasair TD was derived from the earlier Tom Hamilton Glasair and first flew in 1979.  Hamilton formed Stoddard-Hamilton Aircraft that year to produce and market the kit, which was the first pre-molded composite aircraft available to builders. Robert Franklyn "Bob" Overmyer (July 14, 1936 – March 22, 1996), (Col, USMC), was an American test pilot, naval aviator, aeronautical engineer, physicist, United States Marine Corps officer, and USAF/NASA astronaut.  He was born in Lorain, Ohio, but considered Westlake, Ohio his hometown.  Overmyer was selected by the United States Air Force as an astronaut for its Manned Orbiting Laboratory in 1966.  Upon cancellation of this program in 1969, he became a NASA astronaut and served support crew duties for the Skylab program and Apollo-Soyuz Test Project.  In 1976, he was assigned to the Space Shuttle program, and flew as pilot on STS-5 in 1982, and as commander on STS-51-B in 1985.  He was selected as a lead investigator into the Space Shuttle "Challenger" disaster, and retired from NASA in 1986.  Ten years later, Overmyer died in Duluth, Minnesota while testing the Cirrus VK-30 composite homebuilt aircraft.
Answer: Cirrus Aircraft Corporation