As of June 2016, the CFM56 is the most used high bypass turbofan, it achieved more than 800 million engine flight hours, and at a rate of one million flight hours every eight days it will achieve one billion flight hours by 2020.--> It has more than 550 operators and more than 2,400 CFM56-powered jet aircraft are in the air at any moment.--> It is known for its dependability: its average time on wing is 30,000 hours before a first shop visit, with the current fleet record at 50,000 hours.