These sights can be set to indicate a projected or reflected beam of light which determines the flight path into the arrester wires required to be followed by the pilot of the particular type of aircraft to be landed.
Eza zipili zinto zokubena zingabekwa ukuze zibenakalise umtha wokukhanya o benakalise indlela yekubhabha eya kumocingo okubambi inqwelo moya ithebe isantya, efuneka ilandelwe ngumqhubi wohlobo eluthile lwenqwelo meya ekufuneka ihleli phantsi.