This Day in Aviation History
April 24th, 1933
First flight of the Grumman JF Duck.

The Grumman JF “Duck” was a single-engine amphibious biplane, built by Grumman for the United States Navy during the 1930s.

The Grumman JF Duck was manufactured from 1934 until 1936, when production switched to the J2F Duck and later variants. The more obvious external appearance clue to distinguish a JF from an early J2F is the deletion of the inter-aileron strut between the wings on the J2F; less noticeable perhaps is the J2F’s slightly longer rear fuselage/float joining fillet beneath the tail.

The Duck’s main pontoon was part of the fuselage, almost making it a flying boat, though it appears more like a standard aircraft with an added float. This general configuration was shared with the earlier Loening OL. The XJF-1 prototype first flew on 24 April 1933 piloted by Grumman test pilot Paul Hovgard….

Wikipedia, Grumman JF Duck:

YouTube, Kermie Cam – Grumman Duck:

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