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FAA L-865

An FAA L-865 is a white omnidirectional medium intensity aviation obstruction light. The light flashes at a rate of 40 fpm and must flash in sync with any other lights on the structure.

 

FAA L-865 Intensity Requirements

Step Beam Spread (Degrees) Effective Intensity (Candela)
Day 360 horizontal, 3 minimum vertical 20,000 ±25%
Twilight 360 horizontal, 3 minimum vertical 20,000 ±25%
Night 360 horizontal, 3 minimum vertical 2,000 ±25%

 

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