turnin:
how do auto-lands work, are instructions passed between the airport and the plane or is the plane autonomous ?
The aircraft navigation radios are tuned into a navigation radio station in this case a navigation aid called an ILS (Instrument Landing System), this system has been in use since the 1930's and provides very accurate horizontal and vertical signals to the aircraft. These signals are preset and checked on a regular basis. The ILS is coupled to the autopilot and is capable of guiding the aircraft onto the runway with the pilots monitoring the integrity of the signals and the progress of the aircraft. The aircraft is effectively autonomous.