Delivered: July 16, 1931
With its flawless design, careful workmanship and the safety characteristics of a Stearman, the 4-D Jr Speed Mail also had beautiful proportions and flowing lines. A high speed sport craft with good performance and a 600 lb. payload the 4-D had many practical uses.
The first 4-D was purchased by the Pratt and Whitney engine company and was used to tour the country and promote their new Junior Wasp engine. The 4-D was also purchased by Western Air Express for the mail route and was the first Californian mail carrier. This model was later replaced by the 4-EM single seat mail cargo carrier.
Typical Chrome-Moly and fabric construction, this was the first production aircraft to take full advantage of the rather large, but streamlined NACA low drag engine cowling.
This Jr Speed Mail was acquired by Yanks in August of 1987 and is one of only two flyable today.