Always evolving: we never stop improving the CFM56

The history of CFM’s six CFM56 engine models – from the initial CFM56-2 to today’s CFM56-7B Tech Insertion standard – is punctuated by technology breakthroughs. When CFM matures new technologies, we incorporate the advances into production standards and re-invigorate the fleet already flying through upgrade kits. Visit our interactive timeline for a history of CFM56 improvements.