First flight of the production version of the Bell Model 47/YR-13

Description

First flight of the Type that has been produced in the 1000's both in the USA and, under license, abroad. The initial production version carried the designation YR-13 in US Army service.

(Source: "The American Helicopter: An Overview of Helicopter Developments in America 1908-1999," Michael J. Hirschberg, July 2000, Page 42)