Originally Posted by
Jim_A
Unless an aircraft is specifically designed for aerobatics, it is likely that the wings will fall off at sustained negative g.
Fun fact, a wing cannot be stalled in a zero g state.
Maybe you should check the G limitations for a non aerobatic aircraft. Airliners are typically -1 G to +2.5 G when clean. While there are plenty of reasons why they will struggle with inverted flight, "wings falling off" is not one of them.