Originally Posted by
jabberwok
There is a third category which includes aircraft having a generally sound flight envelope but which have a specific design flaw. Examples are the Meteor dive and Barracuda loss of elevator control. Neither stopped the aircraft going into service and it was education that stopped attrition rather than elimination of the problem.
I think the Lockheed P-38 Lightning kind of fits into this category, I think it had flutter problems.
From Wiki
"A more serious problem was "compressibility stall," the tendency of the controls to simply lock up in a high-speed dive, leaving the pilot no option but to bail out. The tail structure also had a nasty tendency to fall apart under such circumstances, and in fact this problem killed a YP-38 test pilot, Ralph Virden, in November 1940."