(https://www.airwaysim.com/forum/proxy.php?request=http%3A%2F%2Faviadejavu.ru%2FImages6%2FAI%2FAI77-4%2F5-4.jpg&hash=f9faeb5a94a100086e8540d6a96a30a98c54aede)
Video: http://www.museesafran.com/en/videos/1er-vol-du-cfm56-sur-banc-volant-caravelle/
From wiki
"The engine flew for the first time in February 1977 when it replaced one of the four Pratt & Whitney JT8D engines on the McDonnell Douglas YC-15, an entrant in the Air Force's Advanced Medium STOL Transport (AMST) competition.[16] Soon after, the second CFM56 was mounted on a Sud Aviation Caravelle at the SNECMA flight test center in France. This engine had a slightly different configuration with a long bypass duct and mixed exhaust flow,[nb 1] rather than a short bypass duct with unmixed exhaust flow.[nb 2] It was the first to include a "Thrust Management System" to maintain engine trim."
Imagine having a CFM-56 caravelle in AWS ;D (and 707, DC-8, Mercure too as that was in the plans hahaha)