EVEN if all the authorities grant permission for the 225 to fly under their OAC's, who's to say the oil workers and their unions will allow them to board the machine. I know it's a "tainted" machine in their eyes, they have no trust in it.
You can be rotors running about to pick up a load of Pax but if they have been told NOT to board then you can't force them, this is something AH along with the agencies don't get. Look back at the BV234, sat in hangers in ABZ and ENZV