Larry, I am not aware of any failures, cracking, Service Bulletins or Service Letters regarding failures or cracking at the rudder cable attach tube. The known location is at the bottom of the rudder pedal vertical tube where it is welded to the horizontal bottom tube. It is my understanding, those are the locations reinforced. Can you point me to your information please?
As a curiosity, does anyone have a guess, how hard you'd have to stomp on left rudder to tear the vertical rudder tube metal? The picture shows the weld intact, but the surrounding metal torn.
Thanks, Greg