From the Age
Flying blind - how to land in fog
1. Under a category III rating, which allows planes to land in fog, the control tower communicates with the pilot to direct the plane down where the pilot has no visibility.
2. A software program is used as well to locate the plane and direct it towards the runway.
3. On the ground high intensity lighting along the centre line of the runway also needs to be fitted.
What has the control tower got to do with it that's any different from any other approach ?