1. Non-directional beacons used in air navigation use Morse to transmit their identifier. 2. A non-directional beacon is installed but there is no let-down procedure. 3. The non-directional beacons show the pilot whether he is on the right course. 4. It formerly housed a non-directional beacon as part of the precision approach at Sault Ste. 5. Then they missed a directional beacon that would have showed them where the runway was. 6. Non-directional beacons were installed at Espeland and Bjelkar�y. 7. Non-directional beacons were used in this way by aircraft ADF ( Automatic Direction Finding ) equipment. 8. A non-directional beacon was installed on Tautra and a visual approach slope indicator at the runway. 9. It has a partial electronic guidance system consisting of a Localizer, Distance Measuring Equipment and Non-directional beacon . 10. The nearest radio navigation aid for pilots is the Goulburn Non-Directional Beacon installation located within the airport boundary.