The concept structure was offered in Oct 1964 with the Air Transport Association maintenance and engineering convention by chief project engineer Jack Steiner, in which its elaborate high-elevate devices elevated concerns about servicing costs and dispatch dependability.[five] From the early nineteen nineties, Boeing was experiencing a big risk in the https://borrow-cash-app08383.qowap.com/95511544/not-known-factual-statements-about-737-cash