Originally Posted by Bucking Bar

The system has been revised.


IMHO, Boeing should have known better than to use a single valve to control the PCU on the most powerful flight control surface on the jet. They deflected litigation towards Parker Hannifin, but the source of the design was Boeing.

Anything and everything that is subjected to the stresses of flight eventually fails. Designs have to be fault tolerant. The original design wasn't.

Originally Posted by hockeypilot44

The government won't do that. In the mid 90's, the 737 should have and deserved to be grounded due to a faulty rudder. That would have grounded everyone's favorite low cost carrier (yes they were a lcc back then). It didn't happen.