12-15 hours at a 20 deg from vertical, Andu, according to the pam.
A pic of an MRH90 carrying an underslung DFC (Drum Fuel Collapsible) during AMTDU's trials - looky here!
We should be flexible enough to set up FARPs - or at least the DACC equivalent to a FARP - with great ease. Should be. Plenty of ADF assets in Qld that can do that sort of thing.