Jo,
However, the problem is that the Type A and all the other topo data one can lay one's hands on ... aren't at all interested in whether your particular aeroplane can better the rocky bits.
That remains the operator's responsibility to sort out (realistically, the average pilot doesn't have the tools and information to do the work). Note that I don't suggest that the pilot is not capable of doing so - there is nothing overly difficult there and it just takes good attention to detail and very rigorous housekeeping.