Important requirements of beacons lighting airways of United States are taken up; beacon should have high maximum candlepower; flash length; flash interval; vertical spread; color; identifying characteristics.
Airway beacons
Aero Digest
Aero Digest ; 14 , n 6
1929
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1935
|Controlling the effectiveness of airway beacons
Engineering Index Backfile | 1929
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