[BC] to light or not to light

[Mike McCarthy]

The obstruction marking standards in FAA Advisory Circular 7460-K.  Those are extended to tower owners and licensees by the FCC if the tower has CFR 47 licensees on the structure.

MM

John Buffaloe wrote:
> > I had a situation in San Diego several years ago where I was contacted
> > by the police department's helicopter division and asked if I would put
> > strobes on the 442' KSON tower.  They were always in the area (high
> > crime) and down low, worried about not finding the red lights.  I took a
> > night time ride with them and approaching the tower from the north I
> > could pick it out, but when I looked away and looked back the red lights
> > had disappeared into the tail lights of cars traveling south on I-5.
> 
> A related question: are tower lights required to be red or white?  In this
> situation the confusion could be avoided just by changing the beacons to a
> different color (amber, for example), but I've never seen tower lights
> that are not either red or white-ish beacons or white strobes.  (I say
> "-ish" because some of the LED or constant-strobe beacons give off a
> distinctly purple-ish hue of white, as typical of LED flashlights or
> high-intensity automotive headlamps.)
> 
> 
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Mike McCarthy

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