Beechcraft L-23 Seminole

L-23/U-8 Seminole
US Army U-8D Seminole liaison version
Role	Utility aircraft
Manufacturer	Beech Aircraft Corporation
First flight	1949
Introduction	1952
Retired	1992
Primary user	United States Army
Produced	1952-1961 (L-23A/E) 1958-1963 (L-23F/U-8F)
Number built	288 (including 71 L-23F/U-8F)
Developed from	Beechcraft Twin Bonanza
Variants	Beechcraft Queen Air

The Beechcraft L-23 Seminole (later designated U-8) was the United States Armed Forces designation for the Beechcraft Twin Bonanza and Queen Air aircraft in its inventory.

In 1951 the United States Army evaluated a Twin Bonanza at Fort Bragg, North Carolina and subsequently ordered four 'off-the-shelf' Model 50s as YL-23s, these being delivered in early 1952. Further examples of the Model 50 were ordered under the designation L-23A and Model B50s were also ordered under the designation L-23B. These accounted for the majority of Twin Bonanza production during 1952 and 1953, the first L-23A being delivered in February 1953 and the last L-23B being delivered in April the following year., shortly before cessation of the Korean War.

In 1955 the United States Air Force ordered a single Model C50 Twin Bonanza under the designation XL-23C for evaluation; this was the only L-23 variant not delivered to the US Army as no further orders were placed by the Air Force. In 1956 deliveries of L-23s to the Army recommenced when Beechcraft delivered six Model D50s under the designation L-23E. In January 1957 the first example of the L-23D was delivered, based on the Model E50 Twin Bonanza. During 1958 the remaining L-23A and L-23B aircraft in service (a few had crashed) were returned to the Beechcraft factory, where they were remanufactured to a similar standard as new-build L-23Ds and then re-designated as such with new constructor's numbers and military serial numbers. In 1958 the Army also ordered 11 RL-23Ds with further examples being converted from L-23Ds. These aircraft featured belly-mounted radar, either AN/APS-85 in a large pod or AN/APQ-86 in a long narrow pod mounted on brackets with a modified nose as well.

Also in 1958 Beechcraft began to develop a variant with a larger cabin at the request of the US Army. The L-23F that emerged had the same wings and tail but up to ten people could now fit in the longer, wider and higher cabin compared to only five in earlier L-23s. Beechcraft gave the type the in-house designation of Model 65 and developed it as a civilian aircraft as well, christening it the "Queen Air". The first two Model 65s built were retained by Beechcraft as prototypes and the third was delivered to the Army in 1960, with a further 23 being delivered that year and in 1961.

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