DAN SHUMAKER COLLECTION
No. 14240. Keystone Pup
Source unknown

Keystone Pup

12/31/2023. Remarks by Johan Visschedijk: "Powered by a 220 hp Wright J-5 (R-790 Whirlwind) engine and named Pup, Keystone Aircraft created this open-cockpit two-seat biplane in 1928.

Keystone Pup
Keystone Pup (Johan Visschedijk Collection) APS No. 3321

Keystone Pup
Keystone Pup (Johan Visschedijk Collection) APS No. 729

Keystone Pup
Keystone Pup (Johan Visschedijk Collection)

The Keystone Pup could be flown with a wheels or float landing gear.

The Pup was entered into a USN design competition for a trainer, it performed well, and Keystone received an order for three prototypes based on it. These where designated XNK-1 and allotted the BuNos. A-7941 to A-7943. Subsequently the markings U.S. Navy and XNK-1 were applied to the Pup.

Keystone Pup
Keystone NK-1 (A-8053) (Johan Visschedijk Collection)

After successful testing of the prototypes, an order was issued for sixteen production aircraft, designated NK-1, BuNos. A-8053 to A-8068, these were delivered in 1930."


Created December 31, 2023