Have to say at least two people here with axes to grind.
The facts are the aircraft is a recent addidtion to AAI fleet. Ex LH, all maintenance was and is currently performed by LH line and heavy MX by Either Haeco or which ever heavy mx facility is close to hand. AAI do NO heavy maintenance.
It appears a #4 hyd system line ruptured and the Alt gear extend on one side failed due to a broken component. No one knows how this currently broke as it is under investigation, hoewever no one form AAI has touched this / these components from installation.
So if you are going to fling mud you should start at the LBA or LH.
But then you obviously have no clue what you are talking about.
The crew did a fantastic job, and they do work for AAI.
Get over it.