CFM Leap- 1B 737 MAX 10 wraps up performance testing News 737 MAX 10 wraps up performance testing 737 MAX Leap-I B June 24, 2022 CFM celebrates ‘mindblowing milestone’ of 1 billion flying hours for CFM56 engine Video CFM celebrates ‘mindblowing milestone’ of 1 billion flying hours for CFM56 engine CFM August 13, 2019
