Variants
- Model 50
- Initial production version powered by two Lycoming GO-435-C2 engines, 13 built (6 for the US Army, remainder civilian versions, with the first 2 production numbers for factory evaluation). As of 2010, only one Model 50 is still registered & flying (serial number H-7).
- Model B50
- Upgraded Model 50 with increased take-off weight, extra cabin windows and improved cabin heating, 139 built (40 for the US Army).
- Model C50
- Superseded the B50; fitted with 275 hp (205 kW) Lycoming GO-480-F1A6 engines, 155 built (one to United States Air Force).
- Model D50
- Superseded the C50; fitted with 295 hp (220 kW) Lycoming GO-480-G2C6 engines, 154 built (six to US Army).
- Model D50A
- Upgraded D50 fitted with GO-480-G2D6 engines, 44 built.
- Model D50B
- Upgraded D50A with new passenger steps and improved baggage area, 38 built.
- Model D50C
- Upgraded D50B with starboard airstair entry door, three rows of seats, improved air conditioning, larger baggage area, 64 built.
- Model D50E
- Upgraded D50C with extra port side window, squared-off rear starbord window, pointed nose and 295 hp (220 kW) Lycoming GO-480-G2F6 engines, 47 built.
- Model E50
- Supercharged version of the D50; with increased take-off weight and 340 hp (250 kW) super-charged GSO-480-B1B6 engines, 181 built (mostly for the US Army).
- Model F50
- Supercharged version of the D50A with GSO-480-B1B6 engines, 26 built including one converted to G50 standard.
- Model G50
- Supercharged version of the D50B with 340 hp (250 kW) IGSO-480-A1A6 engines, increased fuel capacity and increased take-off weight, one conversion from F50 plus 23 built.
- Model H50
- Supercharged version of the D50C with increased take-off weight and IGSO-480-A1A6 engines, 30 built.
- Model J50
- Supercharged version of the D50E with 340 hp (250 kW) IGSO-480-A1B6 engines and increased take-off weight, 27 built.
- Excalibur 800
- A modification designed originally by Swearingen Aircraft and taken over by the Excalibur Aviation Company which re-engines the Twin Bonanza with two 400hp (298kW) Avco Lycoming IO-720-A1A flat-eight engines in a new cowling and revised exhaust system. Other optional improvements were also available.
- L-23 Seminole
- Military version
Read more about this topic: Beechcraft Twin Bonanza
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