The following words and phrases, when used in this chapter,
shall have the meanings given to them in this section unless the context
clearly indicates otherwise:
AIRCRAFT
Any contrivance, except an unpowered hang glider or parachute,
used for manned ascent into or flight through the air.
AIRPORT
A.
Butler Farm Show Airport.
B.
Any area of land or water which is used, or intended to be used,
for the landing and takeoff of aircraft and 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.
C.
As used herein, the term "airport" includes public airports
but excludes private airports and heliports. Public and private airports
are defined separately in this section.
AIRPORT ELEVATION
B.
The highest point of an airport's usable landing area measured
in feet above sea level.
AIRPORT HAZARD
Any structure or 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.
AIRPORT HAZARD AREA
Any area of land or water upon which an airport hazard might
be established if not prevented as provided for in this chapter and
the Act 164 of 1984 (Pennsylvania Laws Relating to Aviation).
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 the same slope as the approach surface zone height limitation slope set forth in §
81-4 of this chapter. In plan, the perimeter of the approach surface coincides with the perimeter of the approach surface zone.
BOARD OF ADJUSTMENT
A Board appointed by the authority adopting these regulations. The numbers of members, powers, governing rules, etc. of the Board are set forth in §
81-9 of this chapter.
CONICAL SURFACE
A surface extending outward and upward from the periphery
of the horizontal surface at a slope of 20 to 1 for a horizontal distance
of 4,000 feet.
DEPARTMENT
Pennsylvania Department of Transportation.
FAA
Federal Aviation Administration of the United States Department
of Transportation.
HEIGHT
For the purpose of determining the height limits in all zones
set forth in this chapter and shown on the Butler Farm Show Airport
Surfaces Areas Map, the datum shall be mean sea level elevation unless otherwise
specified.
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 surface zone.
NONCONFORMING USE
Any preexisting structure, object of natural growth, or use
of land which is inconsistent with the provisions of this chapter
or an amendment thereto.
OBSTRUCTION
Any structure, growth, or other object, including a mobile object, which exceeds a limiting height set forth in §
81-4 of this chapter.
PERSON
An individual, firm partnership, corporation, company, association,
joint-stock association or governmental entity; includes a trustee,
a receiver, an assignee, or a similar representative of any of them.
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 ends at each end of that runway. The width of the primary surface is set forth in §
81-4 of this chapter. 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 but without limitation, buildings, towers, cranes,
smokestacks, earth formation and overhead transmission lines.
TRANSITIONAL SURFACES
These surfaces extend outward at 90° 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 90° angles to the
extended runway center line.
TREE
Any object of natural growth.
UTILITY RUNWAY
Any runway that is constructed for and intended to be used
by propeller driven aircraft of 12,500 pounds maximum gross weight
or less.
VISUAL RUNWAY
A runway intended solely for the operation of aircraft using
visual approach procedures.
In order to carry out the provisions of this chapter, there are hereby created and established certain zones which include all of the land lying beneath the approach surfaces, transitional surfaces, horizontal surfaces and conical surfaces as they apply to the Butler Farm Show Airport. Such zones are shown on the Butler Farm Show Airport Surface Areas Map created by URS Corporation on behalf of Pennsylvania Department of Transportation, Bureau of Aviation, and dated March 10, 2010, which is
attached to this chapter and made a part hereof. An area located in more than one of the following zones
is considered to be only in the zone with the more restrictive height
limitation. The various zones are hereby established and defined as
follows:
A. Utility runway visual approach surface zone. Established beneath
the visual approach surface. The inner edge of this zone coincides
with the width of the primary surface and is 250 feet wide. The zone
expands outward uniformly to a width of 1,250 feet at a horizontal
distance of 5,000 feet from the primary surface. Its center line is
the continuation of the center line of the runway.
B. Transitional surface zones. Established beneath the transitional
surfaces adjacent to each runway and approach surface as indicated
on the Butler Farm Show Airport Surfaces Areas Map.
C. Horizontal surface zone. Established beneath the horizontal surface,
150 feet above the established elevation, the perimeter of which is
constructed by swinging arcs of 5,000 feet radii from the center of
each end of the primary surface of each runway and connecting the
adjacent arcs by drawing lines tangent to those arcs. The horizontal
surface zone does not include the approach surface and transitional
surface zones.
D. Conical surface zone. Established beneath the conical surface. This
zone commences at the periphery of the horizontal surface and extends
outward from a horizontal distance of 4,000 feet.
FAR Part 77 Imaginary Surfaces
|
---|
Surface
|
Visual
|
Non-Precision Instrument Runway
|
Precision Instrument Runway
|
---|
|
|
|
|
B
|
|
---|
|
A
|
B
|
A
|
C
|
D
|
All
|
---|
Width of primary surface and inner app. surface
|
250
|
500
|
500
|
500
|
1,000
|
1,000
|
Radius of horizontal surface
|
5,000
|
5,000
|
5,000
|
10,000
|
10,000
|
10,000
|
Approach surface at outer end
|
1,250
|
1,500
|
2,000
|
3,500
|
4,000
|
16,000
|
Approach surface length
|
5,000
|
5,000
|
5,000
|
10,000
|
10,000
|
50,000
|
Approach slope
|
20:1
|
20:1
|
20:1
|
34:1
|
34:1
|
50:1a
|
NOTES:
|
---|
a
|
First 10,000 feet, the slope is 40:1.
|
Graphical Depiction
|
Except as otherwise provided in this chapter, no structure shall
be erected, altered, or maintained, and no tree shall be allowed to
grow in any zone created by this chapter to a height in excess of
the applicable height limit herein established for such zone. Such
applicable height limitations are hereby established for each of the
zones in question as follows:
A. Utility runway visual approach surface zone. Slopes 20 feet outward
for each foot upward beginning at the end of and at the same elevation
as the primary surface and extending to a horizontal distance of 5,000
feet along the extended runway center line.
B. Transitional surface zones. Slopes seven feet outward for each foot
upward beginning at the sides of and at the same elevation as the
primary surface and the approach surface, and extending to a height
of 150 feet above the airport elevation which is 1,333 feet above
mean sea level. In addition to the foregoing, when an airport has
a precision instrument runway approach zone, there are established
height limits sloping seven feet outward for each foot upward beginning
at the sides of and at the same elevation as the approach surface,
and extending to where they intersect the conical surface. Where the
precision instrument runway approach zone projects beyond the conical
zone, there are established height limits sloping seven feet outward
for each foot upward, beginning at the sides and at the same elevation
as the approach surface, and extending a horizontal distance of 5,000
feet measured at ninety-degree angles to the extended runway center
line.
C. Horizontal surface zone. Established at 150 feet above the established
airport elevation or at a height of 1,483 feet above mean sea level.
D. Conical surface zone. Slopes 20 feet outward for each foot upward
beginning at the periphery of the horizontal surface and at 150 feet
above the established airport elevation and extending to a height
of 350 feet above the established airport elevation or at a height
of 1683 feet above mean sea level.
In any case in which it is desired to remove, lower or otherwise
terminate a nonconforming structure or use, or the approach protection
necessary cannot, because of constitutional limitations, be provided
by airport regulations, or it appears advisable that the necessary
approach protection be provided by acquisition of property rights,
rather than be airport regulations, the municipality within which
the property or nonconforming use is located, or the municipality
or municipal authority owning the airport or served by it, may acquire
by purchase, grant or condemnation, in the manner provided by the
law under which municipalities are authorized to acquire real property
for public purposes, such air right, aviation easement or other estate
or interest in the property or nonconforming structure or use in question
as may be necessary to effectuate the purpose of this chapter. In
the case of the purchase of any property or any easement or estate,
or interest therein, or the acquisition thereof by the power of eminent
domain, the municipality making the purchase of exercising the power
shall, in addition to the damages for the taking injury or destruction
of property, also pay the cost of the removal and relocation of any
structure or any public utility which is required to be moved to a
new location.
Any person aggrieved, or any taxpayer affected, by any decision
of the Board of Adjustment, may appeal to the Court of Common Pleas
as provided by law. In cases where applicable law does not provide
an appeal from a municipality to a Board, a person or taxpayer may
appeal from a decision of a municipality, as provided by law for similar
proceedings.