Keystone Aircraft

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Keystone Aircraft Corporation was an early pioneer in airplane manufacturing. Headquartered in Bristol, Pennsylvania, it was formed as Ogdensburg Aeroway Corp in 1920 by Thomas Huff and Elliot Daland, but its name was quickly changed to Huff-Daland Aero Corp, then to the Huff-Daland Aero Company. The company made a name for itself in agricultural aircraft, and then in the United States Army Air Corps' early bomber aircraft. From 1924, James McDonnell was the chief designer.

In 1926, Huff left the company, and it was soon purchased by Hayden, Stone & Co, who increased capital to $1 million (United States) and renamed it Keystone. In 1928, it merged with Loening and was known as Keystone-Loening. In 1929, it was taken over by Curtiss-Wright. Keystone became a manufacturing division of Curtiss-Wright and ceased production in 1932.^[1]

Lieut. Comdr. Noel Davis and Lieut. Stanton H. Wooster were killed in their Keystone Pathfinder American Legion while conducting a test flight, just days before they were to attempt a trans-Atlantic flight for the Orteig Prize.

[edit] Aircraft Models

Huff-Daland TA-6, TW-5, AT-1, AT-2 biplane observation/trainers (1923-1925)
Huff-Daland XB-1 Twin-engine experimental military bomber biplane (1927)
Keystone PK-1 flying boat, a licence-produced PN-12
Keystone LB-5A/LB-6/LB-7 Twin-engine twin-tail series of light bomber biplanes, 60 produced 1927-1929
Keystone B-3A/B-4A/B-5A/B-6A Twin-engine single-tail series of bomber biplanes, 127 produced 1930-1933
Keystone K-47 Pathfinder Three-engine biplane (1927)
Keystone K-55 Pronto (1928)
Keystone-Loening K-84 Commuter Single-engine amphibious biplane (1929)
Keystone-Loening K-85 Air Yacht Single-engine amphibious biplane (1929)
Keystone NK Naval biplane trainer (1928)
Keystone PK Twin-engine amphibious biplane (1930)