An FAA L-864 is a red and infrared omnidirectional medium intensity aviation obstruction light. The light flashes at a rate between 20 and 40 fpm (typically 30 fpm for FAA applications under AC 70/7460-1L) and must flash in sync with any other lights on the structure.
FAA L 864 Beacon Intensity Requirements
|Step||Beam Spread (Degrees)||Effective Intensity (Candela)|
|Day||90 or 120 horizontal, 3-7 vertical||140,000 ±25%|
|Twilight||90 or 120 horizontal, 3-7 vertical||20,000 ±25%|
|Night||90 or 120 horizontal, 3-7 vertical||2,000 ±25%|
FAA L 864 Infrared Specifications
The nominal IR wavelength is 800-900 nm per FAA AC 150-5345-43J. An L-864 (L) beacon must emit an IR vertical beam width of ≥ 3° and a minimum IR radiant intensity of 246 mW/sr.
Showing all 11 results