There is a lot of misconception about FAA's Navigable Airspace Standards - which many folks on her incorrectly refer to as FAA's 2,000 foot height limit. It's not a height limit per se, but simply the threshold which triggers FAA involvement in the approval process, primarily to make sure the proposed structure isn't a hazard to air traffic or an inefficient use of air space. They revised their regulations recently, which lowered the burden for applicants applying to build a structure above 2,000 ft. To my knowledge, only telecommunication companies have approached the FAA, and have received permission, to build telecommunication towers above 2,000ft. No real estate developer has ever approached the FAA about a building a skyscraper over 2,000ft. It's local zoning and market conditions which explains why we haven't seen one yet, not the FAA.
Quote:
Old Language - 14 CFR 77.17(c)
A proposed structure or an alteration to an existing structure that exceeds
2,000 feet in height above the ground will be presumed to be a hazard to air
navigation and to result in an inefficient utilization of airspace and the applicant
has the burden of overcoming that presumption. Each notice submitted under
the pertinent provisions of this part 77 proposing a structure in excess of 2,000
feet above ground, or an alteration that will make an existing structure exceed
that height, must contain a detailed showing, directed to meeting this burden.
Only in exceptional cases, where the FAA concludes that a clear and compelling
showing has been made that it would not result in an inefficient utilization of the
airspace and would not result in a hazard to air navigation, will a determination
of no hazard be issued.
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Quote:
New Language - 14 CFR 77.7(d)
If you propose construction or alteration to an existing structure that exceeds 2,000 ft. in height above ground level (AGL), the FAA presumes it to be a hazard to air navigation that results in an inefficient use of airspace. You must include details explaining both why the proposal would not constitute a hazard to air navigation and why it would not cause an inefficient use of airspace.
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