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Archives at The Museum of Flight

Aviation Development, Inc.


Historical Note

Aviation Development, Inc. (ADI) was a company started by William P. Lear. It was solely for the design, engineering, supervision of manufacturing of the SAAC-23, eventually known as the Learjet 23. According to correspondence from June Shields, secretary to Lear, it was an affiliate company but not a subsidiary of either Lear, Inc. or Swiss American Aviation Corporation.

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