Obstruction lighting for pylons, lattice and steel towers
1. Typical red obstruction light with red fixed low intensity and red flashing medium intensity as per ICAO and FAA stype A standard
For towers 45 meters high or below:
- as per ICAO: 1 or 2 red fixed low intensity at the top
- as per FAA: 1 or 2 red fixed light L-810 at the top
For towers between 46m and 107m high:
- as per ICAO: 1 red flashing medium intensity type B at the top with 2 or 3 red fixed low intensity type B at mid level
- as per FAA: 1 red flashing medium intensity L-864 at the top with 2 or 3 L-810 at mid level in flashing mode sync with L-864
At the bottom control cabinet in option
Typical cases for towers with red and white painted bands
Night only operation
or FAA L-810
or FAA L-864
2. White medium intensity obstruction light L-865 as per FAA Style D and ICAO
White flashing lights at night are not recommended in urban area, dual color system (white flashing during day time and red at night) should be used instead
As per FAA style D:
- for towers 61m to 107m high, 1 or 2 white flashing medium intensity light L-865 at the top
- for towers between 107m to 213m high, 1 or 2 white flashing medium intensity light L-865 at the top with 2 or 3 lights L-865 at mid level
As per ICAO:
- for towers 45m to 150m high, 1 or 2 white flashing medium intensity type A at the top and 2 or 3 white flashing medium intensity type A at intermediate levels every 53 meters max
Typical cases for towers without red and white painted bands
Day and night operation (white only)
3. Medium intensity dual color obstruction light (FAA Style E)
