Sir - I refer to the article "Snecma to lead CFM56-XX development programme" (Flight International, 25-31 January, P4).
It is indeed true that Snecma wants to develop the 200kN (43,000lb) engine core, but:
this core will be based upon technologies of Snecma's PAT (Plan d'Actions Technologiques) demonstrator. PAT is a new technology and not a derivative of the GE90 or CFM56-7;
this demonstrator will find an application for a new engine whose designation will be CFMXX (the "56" will be dropped because the core will be different).
JACQUES CARUEL
Vice-president, engineering
Snecma
Paris, France
Source: Flight International
