|Keystone B-3A (S/N 30-281), the first B-3A built.|
|Primary user||United States Army Air Corps|
|Number built||63 B-3A/B-5|
The B-3 was originally ordered as the LB-10A (a single-tail modification of the Keystone LB-6), but the Army dropped the LB- 'light bomber' designation in 1930.
Although the performance of the B-3A was hardly better than that of the bombers flown at the end of World War I, it had come a long way. In terms of its safety, it was far superior to its oldest predecessors.
The B-3A was a member of the last family of biplanes operated by the US Army; it remained in service until 1940. A few years after it was first produced, the introduction of all-metal monoplanes rendered it almost completely obsolete.
The 32nd Air Refueling Squadron, sometimes written as 32d Air Refueling Squadron, is part of the 305th Air Mobility Wing at Joint Base McGuire-Dix-Lakehurst, New Jersey. It operates the KC-10 Extender aircraft conducting air refueling missions. The squadron is one of the oldest in the United States Air Force, its origins dating to 19 May 1917, being organized at Kelly Field, Texas. The squadron deployed to England as part of the American Expeditionary Force during World War I. During World War II, the squadron saw combat service as a B-17 Flying Fortress unit, assigned to the Fifteenth Air Force in Italy. During the early years of the Cold War, it was an RB-47 Stratojet Strategic Reconnaissance Squadron as part of Strategic Air Command (SAC).Douglas Y1B-7
The Douglas Y1B-7 was a 1930s United States bomber aircraft. It was the first US monoplane given the B- 'bomber' designation. The monoplane was more practical and less expensive than the biplane, and the United States Army Air Corps chose to experiment with monoplanes for this reason. At the time the XB-7 was ordered, it was being tested by Douglas Aircraft as an observational plane.Keystone B-4
The Keystone B-4 was a biplane bomber, built by the Keystone Aircraft company for the United States Army Air Corps.Keystone B-5
The Keystone B-5 is a light bomber made by the Keystone Aircraft company for the United States Army Air Corps in the early 1930s. The B-5A was a Keystone B-3A with Wright Cyclone rather than Pratt & Whitney engines.Keystone B-6
The Keystone B-6 was a biplane bomber developed by the Keystone Aircraft company for the United States Army Air Corps.Keystone LB-6
The Keystone LB-6 and LB-7 were 1920s American light bombers, built by the Keystone Aircraft company for the United States Army Air Corps, called Panther by the company, but adoption of the name was rejected by the U.S. Army.