Ill. Admin. Code tit. 92, § 16.60 - Conical Surface
a) A
conical is a surface that extends outward and upward from the periphery of the
horizontal surface at a slope of 20 feet horizontally for each foot vertically,
for a horizontal distance of 4,000 feet.
b) The conical surface does not include the
precision instrument approach surface (see Section
16.80) and the transitional
surfaces (see Section
16.90).
c) There is no conical surface for
Departmental standards.
Notes
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