North Dakota tower

Dave Doherty
Mon Jan 4 20:40:57 EST 2010

I just had a look at the current FAA Advisory Circular AC 70/7460-1K 
regarding tower lighting standards. They provide standards for structures of 
all types, including towers up to 2200'. sets out the presumption that 
structures over 2000' are jointly assumed by the FCC and the FAA to 
represent an inefficient use of airspace. I recall seeing 2049' as the 
maximum some time ago, and that would be consistent with the combination of 
a 2000' limit and rounding to the nearest 100'.



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