Cox-Klemin Aircraft Corporation


The Cox-Klemin Aircraft Corporation was an American aircraft manufacturer based in Long Island, New York in the 1920s.

Cox-Klemin Aircraft Corporation
Founded1921 (1921)
  • Charles Cox
  • Alexander Klemin
Defunct1925 (1925)
United States


It was founded by Charles Cox and Alexander Klemin (a professor at New York University) in College Point, New York. The company took over an ordnance plant in Baldwin, New York in 1924.[1][2] Later that year, it partnered with Ernst Heinkel to design and build a mailplane.[3]

In defiance of prohibition, the company christened its new Nighthawk airplane using champagne in 1925.[4]

The company filed for bankruptcy in 1925.[5] However, bankruptcy proceedings continued into 1926.[6] The case was further delayed after the court could not locate company management.[7]

Grumman would later open its first plant in the shuttered Cox-Klemin factory in 1930.[8]


Cox-Klemin XS-1
Model name First flight Number built Type
Cox-Klemin CK-1 Twin engine monoplane flying boat[9]
Cox-Klemin TW-2 3 Single engine biplane trainer
Cox-Klemin CK-3 Night observation airplane[9]
Cox-Klemin CK-14 Single engine biplane flying boat[9]
Cox-Klemin XS 1922 6 Experimental single engine biplane floatplane scout
Cox-Klemin XA-1 1923 2 Single engine biplane ambulance
Cox-Klemin CK-18 Sea Hawk 1 Single engine biplane flying boat[9]
Cox-Klemin CK-19 Amphibious airplane[9]
Cox-Klemin Nighthawk Single engine biplane mailplane[9]


  1. ^ Pattillo, Donald M. (1998). A History in the Making: 80 Turbulent Years in the American General Aviation History. McGraw Hill Professional. p. 13. ISBN 0-07-049448-7.
  2. ^ "Airplane Makers Buy Navy Plant in Baldwin". Brooklyn Daily Eagle. 16 January 1924. p. 8A. Retrieved 6 December 2020.
  3. ^ "He Designs New Aerial Mail Plane". Dayton Daily News. 13 November 1924. p. 7. Retrieved 6 December 2020.
  4. ^ "Christening is Blow to Drys". Buffalo Sunday Times. Associated Press. 26 April 1925. Retrieved 6 December 2020.
  5. ^ "Airplane Concern Bankrupt, Charge". Brooklyn Daily Eagle. 11 December 1925. p. 3. Retrieved 6 December 2020.
  6. ^ "$500,000 is Owed by Aircraft Corp". Brooklyn Daily Times. 5 March 1926. p. 14. Retrieved 6 December 2020.
  7. ^ "Absentees Delay Bankruptcy Case". Brooklyn Daily Times. 17 March 1926. p. 3. Retrieved 6 December 2020.
  8. ^ Delany, Joan (27 October 2005). "Baldwin: Then and Now". The Leader. Retrieved 6 December 2020.
  9. ^ a b c d e f Eckland, K. O. (9 November 2008). "American Airplanes: Cl - Cr". Aerofiles. Retrieved 6 December 2020.