The first-stage engine blade on one of Delta Air Lines' fleet of 152 CFM CFM56-7 engines may cost around $1,000, but the ramifications of unmitigated pitting and cracking can cost much more in unscheduled maintenance. To prevent this corrosion pitting, fretting, stress corrosion cracking or foreign object damage from causing major problems in its fleet of 152 CFM56-7 engines, Delta TechOps partnered with Lambda Technologies of Cincinnati to develop a technology called low-plasticity ...

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