Definition of Obstruction Light
A light indicating the presence of an object which is dangerous to an aircraft
in flight. The obstruction light is to be mounted at the highest point of the
wind cone assembly to avoid being obscured by any other part when viewed from
above.
Aviation obstruction lights has it’s origins in Europe and the United
States in the early 1920s when night flying began to be a practical proposition.
It was soon realized that critical obstacles needed to be lit in order to prevent
collisions. Various lighting schemes were tried in various places – there
was not the standardization that we have today through ICAO.
Lighthouse beacons or Obstruction Lights are used to protect accidents caused
due to the ship strike to obstacles in the sea like islands, rocks etc. These
Obstruction Lights were started in Seventeenth century.
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