Thanks NT
I hadn't considered a HS-748 and there's a few around here in Indo though none are flying but there's one here that just had a major overhaul and has sat for 18mths after the owner went out of business
There is also a bunch of them for sale out of the UK
Ramp aircraft would be better but beggers can't be choosers and the HS has a reasonable sized cargo door
Would it be able to get into a 500m strip loaded and get out lightly loaded at that altitude ? Interesting