Martin B-10
Technical Information

Background
The B-10, the first of the modern all-metal monoplane bombers to be produced in quantity, featured such innovations as internal bomb storage, retractable landing gear, a rotating gun turret, and enclosed cockpits, that served with the USAAC in 1933-1936 period until replaced by the Boeing B-17 Flying Fortress.

In 1936, the B-10 design was sold for export as the model 139W. 189 B-10 bombers were sold to foreign customers. 120 of these went to the Netherlands East Indies (NEIAF). In the late later 1930's and during WWII, China and the Netherlands flew export versions in combat against Japan. Also, 3 B-10s served with the Philippine Army Air Corps. Argentina bought 35 Martin 139Ws, including 12 for the Argentine Navy

Technical Details
Crew  Four
Engines  Two Wright R-1820's of 775 hp
Span  70 ft. 6 in
Length  44 ft. 9 in
Height  15 ft. 5 in
Maximum Speed  215 mph
Range  1,370 miles
Armament  3 x .30 cal.MG
Bombload  2,200 lbs