there are known problems in flying...the art , repeat art of flying demands that we know where the traps are.
before I learned to fly, and that was over 38 years ago, ALPA requested that all jet airports have ILS apchs.
The Birmingham crash probably could have been avoided with a better runway and clear area and a full ILS.
The Asiana crash , even if it had the ILS, probably would still happened as the basic requirement of sufficent airspeed was not present.
there...I've said it...any non precision apch in real conditions is more dangerous than a normal ILS apch.
All pilots should learn the traps, memorize them, know the chain of errors (hell with swiss cheese...except on a sandwich)and when they think they are going down the same garden path...get the hell out of there.