Jack. I understand what you are saying completely, and I agree that unforecast conditions can catch anyone out. It could even be described as 'unavoidable'...
My point is, just as airspace classification is designed to afford maximum protection to high capacity aircraft, I would have thought Airline policy would follow suit. I recall a 727 many years ago ex BN for AD had a crack at AD, 2 approaches at ML, got halfway to CB and ended up in LT....and that was a freighter. Because he could..
Note my original post
p.s oh, and you blokes who actually recommend the use of autoland at a non Cat3c aerodrome vice a sensible fuel policy, you may as well hand the whole job over to a computer and stay at home...