[cpncrunch]

The autopilot requires the ILS to land the plane. If the ILS is inoperative, it can't autoland. However pilots do still land planes to keep their skills honed.

[vl]

Presumably GPS and/or visual recognition system can be used to achieve the same, after all airstrip location is know in advance.

[yutyut]

Presumably, the visual recognition system in this case was a human.