Now there is GBAS...even with CAT III autoland........
System is not complicated, and new ac's already come standard.
What CAT III minima is it currently approved for?
The (albeit dated article) implies autoland off a 50DH, which whilst impressive if true is still not as capable as the MLS at the likes of LHR.
FAA Targets 2018 For GPS-Based Autoland Capability | Commercial Aviation content from Aviation Week