While passengers may see little more than a blanket of gray outside the window during approach, pilots are preparing for one of commercial aviation's most sophisticated procedures. The Instrument Landing System: An Invisible Highway To The RunwayEvery autoland event begins with the same foundation: the Instrument Landing System, better known as ILS. During an autoland approach, pilots typically engage multiple autopilot channels well before intercepting the ILS. A fail-operational autoland system can tolerate a single failure and still complete the landing automatically, making it suitable for the lowest visibility operations. Although the technology performs the landing, pilots remain the final authority.