Beechcraft Twin Bonanza - Variants

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Superseded the B50; fitted with 275 hp (205 kW) Lycoming GO-480-F1A6 engines, 155 built (one to United States Air Force).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Superseded the C50; fitted with 295 hp (220 kW) Lycoming GO-480-G2C6 engines, 154 built (six to US Army).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