Angels and ILS

The system they are referring to is called ILS. It uses directional radio antennas to project radio signals into the air along the safest approach routes. Put as simply as possible, to stay on course for landing, a pilot points an airplane to where the signals are strongest. In order to avoid problems with any structure on final approach, this radio signal is going to be so high up above the temple at 5 miles (8.05 kilometres) out that there is not much chance of the angel getting in the way of the signal.


References

“How High Up Is A Plane 20 Miles From Touchdown?” airliners.net


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