Wino- The rudder PFCU on the B737 was not "Fixed" but flight techniques were developed which reduced the risks inherent in the poor design. Note however, that the NG version has been fixed, although no changes to the classics took place.
It was not just 2 out of 3500 aircraft - there have been others (as I said in my last post, at least 1 at BA and other "unexplained" problems have occurred at toher operators.
Still no explanation as to why B737 and 747 fuel pumps have not been sorted - none of them were grounded - just asked to fly with a bit of uel in the tanks to keep the pumps cool. Now that sounds like a good idea to me - much cheaper than actually fixing the problem.
If you read my post it is not about how the FAA react but the outcry form the anti-European lobby every time a european built aircraft has a problem. I do remember the FAA grounding DC10s, but I don't recall the pro-Boeing lobby asking for B737 and 747 to be grounded when they hit a problem. Who called for the MD 80/83 etc. series of aeroplanes to be grounded after the Alaska crash? No-one west of Shannon, that's who!