G.Swanborough, P.Bowers United States Navy Aircraft Since 1911 (Putnam)

One 1914 Wright Model G Aeroboat was tested by the Navy as AH19, but was rejected for poor performance. The last Wright purchased from the original company was the full-fuselage Model K tractor seaplane (AH-23, later A51), still with chain-drive and warping wings.

Форум Breguet's Aircraft Challenge

The Wright Model K was introduced in 1916 by the Wright Aeronautical Co Inc. It was powered by a 60 - 70 hp Wright engine driving two tractor propellers via chains (like the 1903 Flyer configuration, which had a pusher configuration). Twin place machine. The only example was acquired by the US Navy and got the serial AH-23 [A51]. The designation A51 was the first in the A-series designations of the US Navy and Marines.