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Magnificent collection of Warbirds. Impressive restoration projects. Nice atmosphere. Came to see the PoF museum which is next door but never knew that the Yanks...

A. Voet

Came from England to visit your museum in March 2010 and it was worth the journey :-) Thanks to the staff who took time to chat...


Golden Age of Flight

Stearman 4CM-1

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.

Service History

Delivered: July 16, 1931

MFG: Stearman

First Produced: 1930

Powerplant: P/W Wasp Jr.

Horsepower: 300

Prop: Adjustable Metal

Service Ceiling: 15,000 ft.

Cruise: 120 mph

Top Speed: 145 mph

Range: 720 miles

Empty Weight: 2,297 lbs

Gross Weight: 3,800 lbs

Wing Span: 38’ top

28’ bottom

Wing Area: 307 sq. ft.

Length: 26’11”

Height: 10’2”

Armament: None

Number Built: 8

This Jr Speed Mail was acquired by Yanks in August of 1987 and is one of only two flyable today.