This also led to a revival in the operation of simple radio beacons for use with these RDF systems, now referred to as " non-directional beacons " ( NDB ).
42.
BW-3 became an essential navigation aid for ships and aircraft . A non-directional beacon ( NDB ) was situated there to provide a coastal fix for aircraft attempting the BW-1 approach.
43.
The aircraft was assigned a non-directional beacon ( NDB ) approach to Runway 33 at Sultan Abdul Aziz Shah Airport, Kuala Lumpur, after having flown 30 minutes from Singapore Changi Airport.
44.
In the 1950s, aviation NDBs were augmented by the VOR system, in which the direction to the beacon can be extracted from the signal itself, hence the distinction with non-directional beacons.
45.
The non-directional beacons show the pilot whether he is on the right course in the absence of the more advanced Instrumental Landing System, which is standard at most busy European airports.
46.
A C-12 aircraft with a pilot and test crew from the U . S . Federal Aviation Administration tested the airport's non-directional beacons Monday and pronounced them " okay during our test,"
47.
An automatic direction finder, which could be tuned to radio beacons called non-directional beacons or commercial AM radio broadcasters, was until recently, a feature of most aircraft, but is now being phased out
48.
A C-12 aircraft with a pilot and test crew from the U . S . Federal Aviation Agency tested the non-directional beacons Monday and " found it to be okay during our test,"
49.
Among the services available are a Flight Information Service ( FIS ), runway lighting ( 01 / 19 ), and a non-directional beacon ( NDB ) with an approved locator approach to runway 19.
50.
For some non-directional beacons ( NDBs ) the height can be as low as 10 meters, while for more powerful navigation transmitters such as DECCA, masts with a height around 100 meters are used.
