RR,
P.S. Like you suggest, to fly an automatic approach to landing requires an aircraft certified to do it, a crew certified to do it and LVPs (Low Visibility Procedures) in force by ATC - this last one will ensure the localiser/glideslope signals are more protected than usual i.e. less prone to interference from, for example, aircraft parked too close to the runway. The weather also needs to be considered - most aircraft have lower wind limits for an autoland than for a manual landing e.g. in my type the aircraft is certified to autoland in up to 25 knots of crosswind (there are also head- and tail-wind limits) but we can manually land it in crosswinds up to 33 knots.
B&S