Before revision: keeping it on the centre of the runway) is known as an Autoland, where the autopilot uses an Instrument Landing System (ILS) Cat IIIc approach, which is used when the visibility is zero.
After revision: keeping it on the centre of the runway) is known as an Autoland, where the autopilot utilizes an Instrument Landing System (ILS) Cat IIIc approach, which is used when the visibility is zero.