I'm sorry, John, what is the relevance of the airworthiness directive for other Airbus models?
R U suggesting as others have that Airbus whatever the model is is not safe?
And, that as a consequence, that a vertical stabilizer could fall off of an A300 at takeoff,
causing sufficient instability in the airframe at max engine power to wrip both engines and the left wing off?
This is all just speculation of course. That's what we're doing here unless someone has inside info.
If a company builds bad stabilizers for some planes, the new planes might show the same problem later.
Aerdynamic forces rise with low altitude, turbulance, and the square of velocity. If the stabilizer was weak and came off during turbulance and the plane was going fast enough sideways, the wings would rip off.
The Space Shuttle failed very near "Max Q" or maximum dynamic force (air density times velocity squared).