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CFM56-3, -5A & -5B maintenance cost analysis, Issue 8 Nov/Dec 1999
There are more than 6,000 CFM56-3s and -5A/Bs in operation. Despite several teething problems, their durability has contributed to efficient operating economics of modern narrowbodies. Re-rating to lower thrust is allowing many operators to achieve the lowest possible shop visit and life limited part replacement costs.
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