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All data (21 fields)
- Name
- Keystone B-4
- Manufacturer
- Keystone Aircraft Corporation
- Description
- The Keystone B-4 was a biplane bomber, built by the Keystone Aircraft company for the United States Army Air Corps.
- Designer
- Keystone Aircraft Corporation
- Type
- Light bomber
- Length (m)
- 14.9
- Height (m)
- 4.8
- Cockpit Crew
- 5
- Max Speed (km/h)
- 210
- Cruise Speed (km/h)
- 167
- Max Ceiling (m)
- 4300
- Rate of Climb (m/s)
- 30
- Armament
- 3 × .30 in (7.62 mm) Browning machine guns; 2,500 lb (1,100 kg); 4,000 lb (1,800 kg) on short runs
- Number Built
- 5
- Powerplant Description
- 2 × Pratt & Whitney R-1860-7 radial engines, 429 kW (575 hp) each
- Primary Users
- United States Army Air Corps
- Status
- Retired
- Wikipedia Article (URL)
- en.wikipedia.org/wiki/Keystone_B-4
- Flat Wing Span (m)
- 22.8
- Flat Wing Area (m²)
- 106.4
- Number of Engines
- 2