There are hereby created and established certain airspace imaginary surfaces in order
to evaluate whether any existing or proposed structure or object of natural growth
complies with federal obstruction standards as contained in 14 CFR §§ 77.13, 77.15,
77.17, 77.19, 77.21, and 77.23 terminal instrument procedures as contained in FAA
Order 8260.3C and Order 8260.58A, entitled United States Standards for Terminal Instrument
Procedures and federal regulations for turbine powered aircraft as contained in 14
CFR § 121.189. The airspace surfaces are hereby specified for the most restrictive
approach existing or planned for each runway and any planned extension of existing
runways and include all of the land lying beneath the airspace surface, as applied
to each airport. Except as otherwise provided in these Regulations, no application
for an airport height zoning permit may be approved; no structure may be developed,
constructed, established, enlarged, substantially altered or repaired, approved for
construction, or issued a natural resources permit or building permit; and no object
of natural growth may be planted, allowed to grow or be replanted, in any airspace
surface at a height above the height limit established herein for the airspace surface
in which the structure or object of natural growth is located or proposed to be located.
Such height limits will be computed from mean sea level elevation, unless otherwise
specified. The 14 CFR part 77C (primary, horizontal, conical approach and transitional)
airspace surfaces have been analyzed by GOAA, and are illustrated in Figure 10, and
are further defined as illustrated in FAA Order 7400.2k, entitled Procedures for Handling
Airspace Matters.
