As for design flaws or trouble spots etc, how about the DHL A-300 which was hit outside of the left engine on departure from Baghdad a couple of years ago? It still amazes me that those pilots were able to fly it back arouhd by using the throttles for all primary control, never mind airspeed.
What did they consume later to reduce the huge adrenaline surge? Does any other airline now fly into Iraq?
Maybe this was not a design flaw, because the aero. engineers never anticipated a heat-seeking missile impact, but if all hydraulic lines ran together (fusing?) in one small area, is this sort of hydraulic "junction" common in McD. Douglas, Boeing, Fokker, Dornier, Embraer and CRJ aircraft? Maybe it is far enough from the engines to minimize the chance of damage from turbine blade shrapnel
?