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

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.