__NOTOC__ The Keleher JK-1 Lark is a single-seat aerobatic sport aircraft that was designed in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

in the early 1960s and later marketed for homebuilding. It is a conventional,

mid-wing 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 ...

, strut-braced

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 confi ...

with fixed

tailwheel undercarriage Conventional landing gear, or tailwheel-type landing gear, is an aircraft undercarriage consisting of two main wheels forward of the center of gravity and a small wheel or skid to support the tail.Crane, Dale: ''Dictionary of Aeronautical Term ...

. 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 aircraft t ...

and empennage are of welded steel tube construction, skinned in

fabric Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not th ...

. The wings are wooden and also covered in fabric. The design was revised in 1963, with the new version designated Lark 1B. Plans for this version were offered for sale from 1968 and were still on sale into the 1980s. An example of the 1B won the "Outstanding Workmanship" award for L. C. Koetkemeyer at the 1968 EAA Fly-in. As of 2008, six remained registered in the United States.FAA registration enquiry
/ref>

Specifications

References

* * * {{cite book , last= Gunston , first= Bill, title=World Encyclopedia of Aircraft Manufacturers , year=1993 , publisher=Naval Institute Press , location= Annapolis , pages=168 , isbn= 0-7509-3981-8 1960s United States sport aircraft Homebuilt aircraft Aerobatic aircraft Mid-wing aircraft