Five decades ago, Boeing's new 727 jet also had a terrible start

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As Boeing Co and global airlines work to restore public confidence in the 737 MAX after two deadly crashes, they will have a play book they can use. This is not the first time that Boeing has faced a crisis after launching a new plane with innovative technology. Like the 737 MAX, the three-engined 727 was billed as one of the most advanced aircraft of its time.