CFM56 engine fleet exceeds 500 million flight cycles MRO Business Today 23:41 CFM56 engine fleet exceeds 500 million flight cycles CFM International's CFM56 engine fleet has exceeded 500 million flight cycles while logging nearly 900 million flight hours since the first aircraft, a DC-8-71, entered commercial service in April 1982.There are at present more than Share this Share on FacebookTweet on TwitterPlus on Google+