JW411
The fact is that the damage caused by the pylon and the engine going up and over the wing caused massive hydraulic leaks apart from the retraction of the slats on the left wing.
Your statement above is not meaningful unless you define "massive hydraulic leaks" in light of the design concepts of "shielding", separation" and/or "redundancy"
Are you saying that multiple hydraulic systems were compromised or just that one single hydraulic system failed that "was" or "could" not be accomodated through other systems
