Master Plan Update Section 8 – Airport Plans SECTION 8 AIRPORT PLANS The major improvements outlined in the parties responsible for preparing the plans. preferred alternative are incorporated into the Graphic representations of the airport location updated Airport Layout Plan (ALP) drawing set. (scale 1" = 500,000" or sectional aeronautical chart) The ALP is a group of drawings that serve as the and the airport vicinity (scale 1" = 24,000" or USGS primary tool for the guidance of future growth at 7 minute quadrangle map) are also presented on the Airport. The various drawings depict the the cover sheet for orientation purposes. recommendations contained within this Master Plan Update with regard to aviation development 8.2 AIRPORT LAYOUT PLAN (ALP) at Nampa Municipal Airport. The ALP set was reduced from its working size of 24-inch x 36-inch The ALP depicts existing facilities and future to be incorporated here for easy reference. The improvements recommended as a result of this ALP drawing set consists of nine (9) unique plan Master Plan Update. The ALP was developed in sheets and specifically includes the following: accordance with FAA AC 150/5070-6B Change 1, Airport Master Plans and the FAA’s Airport x Cover Sheet Layout Plan Drawing Set Checklist. x Airport Layout Plan (ALP) x General Aviation Area Drawings The Airport Data Table includes information x Airport Airspace Plan related to the overall airport such as elevations, x Inner Portion of the Approach Surface airport reference point (ARP) coordinates, mean Drawings maximum daily temperature in the hottest month, x Airport/Community Land Use Drawing and airport reference code (ARC). The ARC refers x Airport Property Map to the FAA system for relating airport design criteria to operational and physical characteristics These drawings are presented in 11-inch × 17-inch of aircraft using and anticipated to use the airport. (not to scale) format at the end of this chapter. As indicated, full size drawings (24-inch x 36-inch) The Runway Data Table presents information for have been provided through a separate package each runway such as runway end coordinates, for the City and agency approvals and use. approach category, dimensions, airfield surface Subsequent sections provide brief descriptions of and pavement strengths, instrumentation, lighting their elements. and marking, approach aids, and safety area dimensions. 8.1 COVER SHEET The ALP reflects improvements recommended in The Cover Sheet lists the contents of the drawing this Master Plan Update through the 2028 set and identifies the airport owner and the planning horizon for Nampa Municipal Airport 8-1 Master Plan Update Section 8 – Airport Plans including airfield improvements, such as new category and type of existing or planned taxiway connectors, and areas to be reserved for approach. It is recommended that local future landside development including hangars jurisdictions incorporate any modifications to the and various ramp areas associated with based or Imaginary Surfaces as part of applicable zoning transient tie-downs. Improvements recommended ordinances. USGS quadrangle maps were used as beyond the 2028 planning horizon are also the basemap for this sheet. The Airport Airspace reflected on the ALP. Notable projects among Plan depicts the FAR Part 77 imaginary surfaces these ultimate phase improvements include a for Nampa Municipal Airport. south parallel runway and associated taxiway system, extension of the existing runway to 6,000 The ultimate runway configuration is analyzed as feet, and potential areas of expansion for general part of this airspace plan, in which an ultimate aviation facilities and an industrial park 1,000-foot runway extension to the existing development. runway and a 3,200-foot parallel runway is included. 8.3 GENERAL AVIATION AREA DRAWINGS The runway plans and profiles provide an The General Aviation Area drawings provide a overview of known significant obstructions along large-scale depiction of existing building and the runway length and in the approach zones off apron areas on the airport as well as areas the ends of each runway. Existing approach highlighting future landside facilities including slopes are noted as well as the ground profile space for aircraft apron and hangar development. along the runway centerline and beneath the approach surfaces to provide guidance in 8.4 AIRPORT AIRSPACE PLAN calculating exact distances between ground surfaces and approach surfaces. This drawing This sheet incorporates a graphic representation should be used by airport management to ensure of the Imaginary Surfaces as described within that all obstructions that penetrate the imaginary FAR Part 77, identifying and defining imaginary surfaces are either removed or marked in an surfaces intended to protect airspace in the appropriate manner. vicinity of airports. The Imaginary Surfaces are established in relation to the airport elevation and The surfaces shown in the Airspace Plan include: to each runway end. They define those areas x Primary Surface where the safe operation of aircraft necessitates x Approach Surfaces that the height of objects be regulated. This x Horizontal Surface regulation typically occurs through the x Transitional Surfaces establishment of height zoning ordinances by x Conical Surface local governments. Penetration of these surfaces by an object or structure can result in an The following subsections provide a more obstruction affecting navigable airspace. The size detailed discussion of each surface. of each imaginary surface is based on the runway 8-2 Master Plan Update Section 8 – Airport Plans 8.4.1 Primary Surface nonprecision approach for Runway End 29. Visual approaches are assumed for both ends of The primary surface is longitudinally centered on the ultimate parallel Runway 11R-29L. each runway. When a runway has a specially prepared hard surface, the primary surface Table 8.1 summarizes the dimensions of the extends 200 feet beyond each end of the usable approach surfaces for Runways 11-29 and 11L- runway. The widths of primary surfaces 29R under ultimate levels of development. applicable to the Airport’s runways are 500 feet for both Runway 11-29 and the ultimate parallel 8.4.3 Horizontal Surface runway 11R-29L. The horizontal surface is a horizontal plane 150 8.4.2 Approach Surfaces feet above the established airport elevation. At the Nampa Municipal, the airport elevation is The approach surfaces are longitudinally centered 2,537 feet above MSL; therefore, the horizontal on the extended runway centerlines, and extend surface’s elevation is 2,687 feet MSL. In plan outward and upward from each end of the view, the dimensions of the horizontal surface are primary surface. The slopes and dimensions of established by striking arcs from a point at the these surfaces are determined for each runway intersection of the extended runway centerlines end based on the type of approach to be provided. and the lines designating the end of the primary The existing and ultimate development scenario surface for each runway; the arcs are then at Nampa Municipal includes a nonprecision connected by lines tangent to these arcs. The radii approach for Runway End 11. Runway End 29 of the arcs are 5,000 feet for all visual runways currently has a visual approach. The future and and 10,000 for all other runways. ultimate development scenarios include a Table 8.1 Approach Surface Dimensions by Runway End Approach Surface Dimension Runway 11 Runway 29 Runway 11L Runway 29R Inner Width 500 500 500 500 Outer Width 3,500 3,500 1,500 1,500 Length beyond Primary Surface 10,000 10,000 5,000 5,000 Source: Code of Federal Regulations (CFR) Title 14: Aeronautics and Space, Part 77, Subpart C 8.4.4 Transitional Surfaces the horizontal surface or any other surface where more critical restrictions are applicable. The transitional surfaces are inclined planes with slopes of 7:1; they extend outward and upward from the primary and approach surfaces, terminating at the point where they intersect with 8-3 Master Plan Update Section 8 – Airport Plans 8.4.5 Conical Surface guidance by categorizing all areas of the Airport by specific functional use. The conical surface is an inclined plane extending outward and upward from the outer boundary of The other principal purpose of this plan is to the horizontal surface at a slope of 20:1; it extends provide overall developmental guidance for areas for a horizontal distance of 4,000 feet. The top of immediately adjacent to, but off the airport and the conical surface is at a height of 2,887 feet MSL. influenced by airport operation. The off-airport areas illustrate relationships with the boundaries 8.5 INNER PORTION OF THE APPROACH of the airport property, land use as designated by SURFACE DRAWINGS the controlling jurisdictions, and noise contours. Noise contours represented include the 65 day- These drawings provide plan and profile view night sound level (DNL) contours, and reflect depictions of the existing and ultimate approach existing land use relative to acceptable noise areas and detailed views of the physical features compatibility guidelines. near each runway’s extended centerline. These include topography, roads, structures, 8.7 AIRPORT PROPERTY MAP obstructions, and incompatible objects in these critical areas. A table summarizes the existing The Airport Property Map identifies land penetrations to the inner approach surfaces and comprising the Airport and provides details their proposed disposition. concerning the way various parcels of land were acquired or disposed of in past years. Based upon 8.6 AIRPORT/COMMUNITY LAND USE existing printed sources, documents concerning DRAWING land acquisitions are identified, as well as the means used to acquire the property. The Airport/Community Land Use Drawing are a graphic representation indicating general developmental guidelines for all existing on- airport property, property within the 65 day-night sound level (DNL) noise contour, and any proposed acquisition areas.