Somehow, we are all supposed to believe that all the theories of various conditions proferred by posters result in no warning to the crew that something is awry with the donks which are helping them to remain aloft.
Yeah. Right.
Boeing built a heap of junk which gives no impending warning of any condition which might have an effect on engine performance. Sure they did.
Jet jock Jacks and Jills, they're gonna have to come up with a better excuse than that.
