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 .
Ezi ndawo zinokubekelwa ukubonisa ukukhanya kwebhim ekhutshiweyo okanye eboniswayo sisikhanyisi esibonisa indlela yenqwelo-moya phakathi kwiingcingo zokuyimisa ukuze zilandelwe ngumqhubi wohlobo oluthile lwenqwelo-moya ezakuthi ichophe phantsi.