Can you imagine flying to the moon and back 45 times a day, every day? That's how many miles you would have to fly to equal the experience of the CFM56 fleet. Not only has the CFM56 flown an unmatched 400 million flight hours, but it has done so with unparalleled reliability. CFM doesn’t underestimate the value of reliability. One engine-caused incident, such as a flight cancellation, can have unforeseen and monumental consequences for airlines and their customers. Lost revenue, delays of subsequent flights, loss of airline image, and passenger compensation may all be part of a domino effect set off by one event.
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But you can relax when the CFM56 is powering your aircraft. Already the most trustworthy engine in the industry, the CFM56 just keeps getting better. Fleet-wide in-flight shutdown (IFSD) rate has decreased by 65 percent over the years. Today the CFM56-5B and CFM56-7B are so reliable that, statistically, the average pilot will never experience an IFSD event in his/her entire career. How can this be? Both engines maintain an IFSD rate 0.003 or better, which translates to one IFSD every 333,333 engine flight hours. Assuming the pilot logs 900 flight hours annually, that equates to one event every 185 years.
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