What about the pax?
If you didn't check the plates for your one off charter flight and only realise that you don't have them half way.....
Why not carry on to one of the other ports you frequent and send a message to Ops on the way to have the charts waiting for you on arrival. Quick top up, check the charts and off you go ( providing in hours of course )
Minor disruption for your paying passengers but at least you get them to destination.