Definitions. As used in this section, the following
terms shall have the meanings indicated:
AIRPORT
Front Royal - Warren County Airport.
AIRPORT ELEVATION
The highest point of an airport's usable landing area measured
in feet from mean sea level. The Front Royal-Warren County Airport
is 703.1 feet above mean sea level (MSL).
APPROACH SURFACE
A surface longitudinally centered on the runway center line
extending at a slope of 20 feet horizontally for each foot vertically
20 to 1 from the end of the primary surface for a horizontal distance
of 5,000 feet. The perimeter of the approach surface coincides with
the perimeter of the Approach Zone.
CONICAL SURFACE
A surface extending at a slope of 20 feet horizontally for
each foot vertically 20 to 1 from the periphery of the horizontal
surface for a horizontal distance of 4,000 feet.
HAZARD TO AIR NAVIGATION
An obstruction determined to have an adverse effect on the
safe and efficient utilization of the navigable airspace.
HORIZONTAL SURFACE
A horizontal plane 150 feet above the established airport
elevation, the perimeter of which in plane coincides with the perimeter
of the Horizontal Zone.
NONPRECISION INSTRUMENT RUNWAY
A runway having an existing instrument approach procedure
utilizing air navigation facilities with only horizontal guidance
or area type navigation equipment, for which a straight-in nonprecision
instrument approach procedure has been approved or planned.
OBSTRUCTION
Any structure, growth or other object, including a mobile object, which exceeds a limiting height set forth in §
180-29D of this chapter.
PERSON
An individual, firm, partnership, corporation, company, association,
joint-stock association or governmental entity. It includes a trustee,
receiver, assignee or similar representative of any of them.
PRIMARY SURFACE
A surface longitudinally centered on a hard surfaced runway,
500 feet in width, extending 200 feet beyond each end of the runway.
The elevation of any point on the primary surface is the same as the
elevation of the nearest point on the runway center line.
STRUCTURE
Any object, constructed or installed by man, including but
not limited to buildings, antennas, towers, smokestacks, earth formation
and overhead transmission lines.
TRANSITIONAL SURFACES
These surfaces extend outward at ninety-degree angles to
the runway center line and extended at a slope of seven feet horizontally
for each foot vertical from the sides of the primary and approach
surfaces to intersect the horizontal and conical surfaces.
TREE
Any object of natural growth.
UTILITY RUNWAY
A runway as previously defined that is constructed for and
intended to be used by propeller driven aircraft of 12,500 pounds
maximum gross weight and less.
VISUAL RUNWAY
A runway as previously defined intended solely for the operation
of aircraft using visual approach procedures.