Quoted: You do have to use the autoland feature a certain amount of times in a time period for it to remain current. The autoland will not grease the airplane in. Most airliners (well, boeing aricraft) are landed manually. You are never really flying a fly-by-wire Airbus. Autoland can be used in Cat III c approaches when there is basically ZERO visibility vertically or horizontally. Not many airports in the US are equipped for this, but TONS of them in Europe are.
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From my knowledge, all airliners are flown the same, but only really differ per airline policy. If the carrier requires ILS approach to be flown to a certain point on AP, they fly it on AP to that point and disconnect autopilot for the remaining distance. In some cases that might only be a few hundred feet. As I mentioned earlier, it all depends on the company policy and pilot discretion. In good weather with good visibility, most do fly a great part of approach and final manually, but maybe still using A/T.
Also, a lot of Boeing aircraft have CWS, and even though most Boeing pilots don't like using it, it does basically the same thing as Airbus when Airbus is off AP and being flown manually.
Some companies don't allow certain features to even be installed on their aircraft, like Southwest. Only autobrake they have is for RTO. They don't have autothrottle (A/T) or CWS installed. Saves them money on new aircraft.