Definitions. For purposes of this section, the words listed in this
subsection shall bear the respective meanings assigned to each. Words
in the singular shall be used to include the plural, unless the context
otherwise requires.
AIRCRAFT
Any contrivance, except an unpowered hang glider or parachute,
used for manned ascent into or flight through the air. See 74 Pa.C.S.A.
§ 5102.
AIRPORT
Refers to the Zelienople Municipal Airport and is defined
as any of land or any appurtenant areas which are used or intended
to be used for airport buildings or air navigation facilities or rights-of-way,
together with all airport buildings and facilities thereon. See 74
Pa.C.S.A. § 5102. As used herein, the term "airport" shall
not include heliports. Private and public airports are defined separately
in this section.
AIRPORT ELEVATION
The highest point of an airport's usable landing area, measured
in feet from sea level; here, 897.94 feet above mean sea level.
AIRPORT HAZARD AREA
Any area of land or water upon which a hazard to air navigation
(an airport hazard) might be established if not prevented as provided
by these regulations and the Act of October 10, 1984, P.L. 837, No.
164.
APPROACH SURFACE
A surface longitudinally centered on the extended runway center line, extending outward and upward from the end of the primary surface and at such slope as the approach surface zone height limitation slope set forth in Subsection
D of this section. In the plan, the perimeter of the approach surface coincides with the perimeter of the approach zone.
CONICAL SURFACE
A surface extending outward and upward from the periphery
of the horizontal surface at a slope of 20 to one for a horizontal
distance of 4,000 feet.
DEPARTMENT
The Pennsylvania Department of Transportation.
FAA
The Federal Aviation Administration of the United States
Department of Transportation.
HAZARD TO AIR NAVIGATION
Any object, natural or man-made, or use of land which obstructs
the airspace required for flight or aircraft in landing or taking
off at an airport or is otherwise hazardous as defined by "airport
hazard" in 74 Pa.C.S.A. § 5102.
HEIGHT
For the purpose of determining the height limits in all zones
set forth in this section and shown on the Zoning Map, the datum shall
mean sea level elevation unless otherwise specified.
HEIGHT, TREE
Height as applied to trees shall mean the average of the
expected height of the tree at maturity for the respective species
in consideration of the geographic region and climate of the Borough.
HORIZONTAL SURFACE
A horizontal plane 150 feet above the established airport
elevation, the perimeter of which, in plan, coincides with the perimeter
of the horizontal zone.
LARGER THAN UTILITY RUNWAY
A runway that is constructed for and intended to be used
by propeller-driven aircraft of greater than 12,500 pounds maximum
gross weight and jet-powered aircraft.
NONCONFORMING USE
Any preexisting structure, object of natural growth or use
of land which is inconsistent with the provisions of this section
or an amendment thereto.
NONPRECISION INSTRUMENT RUNWAY
A runway having an existing instrument approach procedure
utilizing air navigation facilities with only horizontal guidance
or area-type navigation equipment and 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 by this chapter.
PERSON
An individual, firm, partnership, corporation, company, association,
joint-stock association or governmental entity, including a trustee,
a receiver, an assignee or a similar representative of any of the
above.
PRECISION INSTRUMENT RUNWAY
A runway having an existing instrument approach procedure
utilizing an Instrument Landing System (ILS) or a Precision Approach
Radar (PAR). It also means a runway for which a Precision Approach
System is planned and is so indicated on an approved airport layout
plan or any other planning document.
PRIMARY SURFACE
A surface longitudinally centered on a runway. When the runway has a specially prepared hard surface, the primary surface extends 200 feet beyond each end of that runway for military runways or, when the runway has no specially prepared hard surface or planned hard surface, the primary surface is set forth in Subsection
C of this section. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway center line.
PRIVATE AIRPORT
An airport which is privately owned and which is not open
or intended to be open to the public, as defined in 74 Pa.C.S.A. § 5102.
PUBLIC AIRPORT
An airport which is either publicly or privately owned and
which is open to the public, as defined in 74 Pa.C.S.A. § 5102.
RUNWAY
A defined area on an airport prepared for landing and takeoff
of aircraft along its length.
STRUCTURE
An object, including a mobile object, constructed or installed
by man, including, without limitation, buildings, towers, cranes,
smokestacks, earth formation and overhead transmission lines.
TRANSITIONAL SURFACES
These surfaces extend outward at ninety-degree angles to
the runway center line and the runway center line extended at a slope
of seven feet horizontally for each foot vertically from the sides
of the primary and approach surfaces to where they intersect the horizontal
and conical surfaces. Transitional surfaces for those portions of
the precision approach surfaces which project through and beyond the
limits of the conical surface extend a distance of 5,000 feet, measured
horizontally from the edge of the approach surface and at ninety-degree
angles to the extended runway center line.
TREE
Any object of natural growth.
UTILITY RUNWAY
A runway 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 intended solely for the operation of aircraft using
visual approach procedures.
WOODLAND
An area of land, bearing a minimum of 1/4 acre, where the
cumulative coverage of tree canopies at maturity covers 1/4 acre of
land or one half of the ground on which the group of trees is located,
whichever is greater.