The Avid Aircraft Magnum is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 two-seat homebuilt

Homebuilt aircraft

Also known as amateur-built aircraft or kit planes, homebuilt aircraft are constructed by persons for whom this is not a professional activity. These aircraft may be constructed from "scratch," from plans, or from assembly kits.-Overview:...

 cabin monoplane

Monoplane

A monoplane is a fixed-wing aircraft with one main set of wing surfaces, in contrast to a biplane or triplane. Since the late 1930s it has been the most common form for a fixed wing aircraft.-Types of monoplane:...

 which was designed and sold as kits by Avid Aircraft

Avid Aircraft

Avid Aircraft Inc was an American aircraft kitplane manufacturer. The company was founded in 1983 by Dean Wilson to produce the Avid Flyer. It ceased operations in November 2003.-History:...

 of Caldwell, Idaho

Caldwell, Idaho

Caldwell is a city in and the county seat of Canyon County, Idaho, United States. The U.S. Census Bureau estimated the population to be 43,281, as of July 2009.Caldwell is the home of the College of Idaho. It is considered part of the Boise metropolitan area....

.

Design and development

The Magnum is a high-wing strut-braced monoplane with a welded steel tube fuselage, the wings have aluminium spars and wooden ribs covered with Ceconite. The Magnum was sold without an engine and was designed for a range of Lycoming engines from 115 hp, for example the Lycoming O-235

Lycoming O-235

The Lycoming O-235 is a family of four-cylinder, air-cooled, horizontally opposed piston aircraft engines that produce , derived from the earlier O-233 engine....

, O-320

Lycoming O-320

The Lycoming O-320 is a large family of 92 different normally aspirated, air-cooled, four-cylinder, direct-drive engines commonly used on light aircraft such as the Cessna 172 and Piper Cherokee. Different variants are rated for 150 or 160 horsepower...

 or the O-360. The enclosed cabin has side-by-side configuration seating for two with an option for an additional seat in the baggage area for two children or a small adult. It has a fixed conventional landing gear

Conventional landing gear

thumb|The [[Piper PA-18|Piper Super Cub]] is a popular taildragger aircraft.thumb|right|A [[Cessna 150]] converted to taildragger configuration by installation of an after-market modification kit....

with a tailwheel and some are fitted with floats.

Specifications (fitted with an 160hp O-320 engine)