It is far more efficient to run your AT from central hubs and use lower priority / cheaper / more plentiful modes of transport to serve the hubs. We have so few frames that it does not make sense to use up all those hrs/takeoffs/landings to pootle up country and pick up a frame or freight. On the engineering front - you'd have to do that work after the frame had been freight anyway. If it is too difficult to put a team at the hub for a week or two, get it moved by road to a better facility. Just a thought.