A heliport approach lighting system installed in a straight line may indicate the preferred direction of approach.
- A heliport approach lighting system consists of a row of 3 white omnidirectional lights spaced uniformly at 30 m intervals and of a crossbar 18 m in length at a distance of 90 m from the perimeter of the FATO.
- The crossbar lights should be in a horizontal straight line at right angles to, and bisected by, the line of centerline lights and spaced at 4.5 m intervals.
- If the final approach course needs to be more conspicuous, add additional lights spaced uniformly at 30 m intervals beyond the crossbar. The lights beyond the crossbar may be steady or sequenced flashing, depending upon the environment.
- Omnidirectional sequenced flashing white lights may be useful when surrounding lights make identification of the approach lighting system difficult.