Lear Avia had completed the design of its Lear Fan 2100 which would be powered by 800 shp. Avco Lycoming engines in 1978 as we reported and the company expected to begin flight tests with the advanced composite business aircraft in Dec. 1979. 

Read more about the aircraft design changes and its estimated specifications. If you're a subscriber you can read the article from the Dec. 4th, issue of Aviation Week & Space Technology on page 59.

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