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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

StepBeam Spread (Degrees)Effective Intensity (Candela)
Day360 horizontal, 3 minimum vertical20,000 ±25%
Twilight360 horizontal, 3 minimum vertical20,000 ±25%
Night360 horizontal, 3 minimum vertical2,000 ±25%

 

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