It's a design flaw, because they're hacking an old design to have larger engines it was never designed for. If they did a clean-sheet new design, they'd never

It's a design flaw, because they're hacking an old design to have larger engines it was never designed for. If they did a clean-sheet new design, they'd never design it this way. The airframe should be retired and they should make a new one. To push this, the FAA and other certifying bodies should treat the plane as an all-new plane with no commonality with previous 737 planes, requiring all new training for pilots and a complete, new certification process for the plane, just as if it had been a clean-sheet new design.