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SECTION 10: AREA NAVIGATION APPROACH (ANA)- LOCALIZER PERFORMANCE WITH VERTICAL GUIDANCE (LPV) SURVEYS ________________________________________________ 1. DESCRIPTION be referenced to the North American Vertical Datum of 1988 (NAVD 88). Area Navigation Approach (ANA) surveys for Localizer Performance with Vertical ANA-LPV surveys also establish (if it does guidance (LPV) approach procedures not exist) geodetic control in the airport provide runway, obstruction, and other vicinity consisting of a Temporary Survey information to support precision and Mark (TSM) accurately connected to the nonprecision instrument approach National Spatial Reference System (NSRS). procedure development for conventional This control and the NSRS connection aircraft using area navigation systems, such assures accurate relativity between surveyed as, GPS. In addition, these surveys provide points on the airport and between these positions and elevations for selected points and other surveyed points in the navigational aids (NAVAIDS) associated National Airspace System (NAS), including with the airport. the navigation satellites. Refer to . http://www.ngs.noaa.gov/AERO/aerospecs. htm for geodetic control specifications and 2. DATUM TIE AND guidelines. LOCAL CONTROL 3. ACCURACIES Surveys accomplished in accordance with these standards shall be tied to the NSRS. Accuracy requirements for control station Positions shall be referenced to the North and obstruction data provided in accordance American Datum of 1983 (NAD 83) which within these specifications are identified in is operationally equivalent to, and may be Table 1 and Table 2. Accuracy used as, World Geodetic System of 1984 requirements for all other surveyed data (WGS 84) values for charting and identified in these specifications shall be in navigation purposes. Refer to: accordance with FAA No. 405 standards. http://www.ngs.noaa.gov/faq.shtml#Transfo Accuracy requirements for control stations rm for clarification of WGS 84 conversions. are presented in Table 1. Accuracy Orthometric heights (MSL elevations) shall requirements for obstructions are presented in Table 2. TABLE 1 CONTROL STATIONS VERTICAL ITEM (VALUES ARE IN CENTIMETERS) HORZ ORTHO ELLIP AGL PRIMARY AIRPORT CONTROL STATION (PACS) 1 5 25 15 N/A SECONDARY AIRPORT CONTROL STATION (SACS) 2 3 5 4 N/A WIDE AREA AUGMENTATION SYSTEM (WAAS) REFERENCE STATION 1 5 10 10 N/A WIDE AREA AUGMENTATION SYSTEM (WAAS) REFERENCE STATION 3 1 0.2 2 N/A TEMPORARY AIRPORT SURVEY MARK (TSM) 1 (TO BE USED WITHOUT PACS OR 5 25 15 N/A SAC) 1 ACCURACIES ARE RELATIVE TO THE NEAREST NATIONAL GEODETIC SURVEY SANCTIONED CONTINUOUSLY OPERATING REFERENCE STATION 2 ACCURACIES ARE RELATIVE TO THE PACS AND OTHER SACS AT THE AIRPORT 3 ACCURACIES ARE RELATIVE TO THE OTHER WAAS REFERENCE STATION AT THE SITE TABLE 2 ANA-LPV APPROACH OBSTRUCTION ACCURACIES VERTICAL ITEM (VALUES ARE FEET) HORZ ORTHO ELLIP AGL NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FEET AGL, THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACES: THE PRIMARY SURFACE 20 10 10 N/A THOSE AREAS OF THE APPROACH SURFACE 20 10 10 N/A WITHIN 10,200 FEET OF THE THRESHOLD THOSE AREAS OF AN APPROACH TRANSITION 20 10 10 N/A SURFACE WITHIN 2,766 FEET OF THE THRESHOLD (AREA T1) THOSE AREAS OF THE APPROACH TRANSITION 50 20 20 N/A SURFACE FURTHER THAN 2,766 FEET FROM THE THRESHOLD BUT NOT MORE THAT 10,200 FEET FROM THE THRESHOLD THE MISSED APPROACH SURFACE 50 20 20 N/A THOSE AREAS OF THE APPROACH SURFACE 100 50 50 N/A FURTHER THAN 10,200 FEET FROM THE THRESHOLD THOSE AREAS OF THE APPROACH TRANSITION 100 50 50 N/A SURFACE FURTHER THAN 10,200 FEET FROM THE THRESHOLD MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACES: THE PRIMARY SURFACE, THOSE AREAS OF THE 20 10 10 10 APPROACH AND TRANSITION SURFACES WITHIN 10,200 FEET OF THE THRESHOLD THE MISSED APPROACH SURFACE 20 10 10 10 Accuracies are relative to the nearest PACS, SACS, HRP, or TSM. Distances relative to the threshold or runway end are measured along the runway centerline or centerline extended to the abeam point. 4. REQUIRED DATA FOR Runways shall be identified by the number RUNWAYS painted on the runway at the time of the field survey. If a number is not painted on Runway data shall be provided for all the runway, the runway number published in runways with a specially prepared hard the United States Government flight surface (SPHS) existing at the time of the information publication "U.S. Terminal field survey. Data shall be provided for Procedures" current at the time of the field non-SPHS runways only if specifically survey shall be used. requested by appropriate Federal Aviation Administration authorities. If runway is Surveyed runway points shall include the under construction, then refer to FAA Runway Thresholds and Touchdown Zone Specification 405, Section 11, OEP Surveys, elevation (if applicable). Additional profile item #4. points abeam are also required if the runway is served by an Instrument Landing System. Unless otherwise stated, all runway points Stopways, Blast Pads, and other shall be on the runway centerline. supplemental profile points are not required. Required data for SPHS runways are presented in Table 3. (Also see Figure 1). TABLE 3 REQUIRED RUNWAY DATA REQUIRED DATA RWY/STWY POINT SPHS RWY NON-SPHS RWY LAT LON ELEV DIST LAT LON ELEV DIST 1 1 AIRPORT ELEV X X X X 2 2 2 RUNWAY ENDS X X X X X X DISPLACED THLDS X X X X X TOUCHDOWN ZONE X POINT ABEAM GS X X X POINT ABEAM MLSEL X X X POINT ABEAM OFFSET LOC X X POINT ABEAM OFFSET LDA X X POINT ABEAM OFFSET SDF X X POINT ABEAM OFFSET MLSAZ X X Note: THE TOUCHDOWN ZONE ELEVATION IS REQUIRED ONLY FOR SPHS RUNWAYS WITH A LANDING LENGTH EQUAL TO, OR GREATER THAN 3,000 FEET. 1) DISTANCE FROM NEAREST RUNWAY END 2) THE RUNWAY END LATITUDE, LONGITUDE AND ELEVATION OF NON-SPHS RUNWAYS IS REQUIRED ONLY WHEN THE AIRPORT ELEVATION EXIST ON THE NON-SPHS RUNWAY. A FACILITY IS CONSIDERED OFFSET IF LOCATED MORE THAN 10 FEET FROM THE RUNWAY CENTERLINE/CENTERLINE EXTENDED. An obstruction, for purposes of this section, 5. NAVIGATIONAL AIDS is any object that penetrates an ANA-LPV obstruction identification surface (OIS). ELECTRONIC NAVAIDS A position, and sometimes an elevation, depending on the navigational aid 6.2. OBSTRUCTION (NAVAID), shall be provided for electronic IDENTIFICATION SURFACES NAVAID facilities associated with the runway approach being surveyed. The OIS dimensions for ANA-LPV surveys are horizontal and vertical survey points for presented in Tables 4 through 7, and Figures electronic NAVAIDS are listed in FAA 2 and 3. Standard No. 405, Appendix 4. NAVAIDS not associated with the runway approach being surveyed are not required. Survey data is required for NAVAIDS meeting all of the following three criteria: - The NAVAID is listed in Standard No. 405, Appendix 4. - The NAVAID is located within 10 nautical miles of the Airport Reference Point. - The NAVAID is associated with an instrument approach procedure for the airport being surveyed and the procedure is published in the United States Government flight information publication "U.S. Terminal Procedures" current at the time of the field survey. This requirement also applies to Airport Surveillance Radars. If the NAVAID is also an obstruction, the obstruction requirements of Section 6 also apply. VISUAL NAVAIDS Visual NAVAIDS are not required. 6. OBSTRUCTIONS 6.1. DEFINITION TABLE 4 PRIMARY SURFACE AREA NAVIGATION APPROACH ___________________________________________________________________ BEGINS 200 FT. ON APPROACH SIDE OF THRESHOLD LENGTH 200 FT. WIDTH AT THRESHOLD 1,000 FT. WIDTH AT THRESHOLD PLUS 200 FT. 1,000 FT. SLOPE SEE "ELEVATION" BELOW ELEVATION ELEVATION OF RUNWAY CENTERLINE AT THRESHOLD THE PRIMARY SURFACE IS A 1,000 FOOT WIDE RECTANGLE CENTERED ON THE RUNWAY CENTERLINE, BEGINNING 200 FEET ON THE APPROACH SIDE OF A RUNWAY THRESHOLD OR DISPLACED THRESHOLD AND EXTENDING TO THE RUNWAY THRESHOLD OR DISPLACED THRESHOLD. __________ TABLE 5 APPROACH SURFACE AREA NAVIGATION APPROACH ___________________________________________________________________ BEGINS 200 FT. ON APPROACH SIDE OF RUNWAY END THRESHOLD (AT END OF PRIMARY SURFACE) LENGTH 20,000 FT. BEGINNING WIDTH 800 FT. WIDTH AT 20,000 FT. 2,240 FT. SLOPE 50:1 FOR FIRST 2,566 FT. THEN 34:1 TO END OF APPROACH SURFACE ELEVATION AT BEGINNING ELEVATION OF THRESHOLD ELEVATION AT 2,566 FT. 51.3 FT. ABOVE THRESHOLD ELEVATION AT 20,000 FT. 564.1 FT. ABOVE THRESHOLD THE APPROACH SURFACE IS CENTERED ON THE RUNWAY CENTERLINE/CENTERLINE EXTENDED. WHEN RUNWAY END THRESHOLD IS DISPLACED, APPROACH SURFACE BEGINS 200 FEET ON APPROACH SIDE OF DISPLACED THRESHOLD. __________ TABLE 6 APPROACH TRANSITION SURFACE AREA NAVIGATION APPROACH ___________________________________________________________________ BEGINS 200 FT. ON APPROACH SIDE OF THRESHOLD LENGTH 20,000 FT. BEGINNING WIDTH 600 FT. (EACH SIDE OF APPROACH SURFACE) WIDTH AT 20,000 FT. 2,910 FT. (EACH SIDE OF APPROACH SURFACE) SLOPE 7:1 PERPENDICULAR TO RUNWAY CENTERLINE/CENTERLINE EXTENDED TOP ELEVATION AT BEGINNING 85.7 FT. ABOVE THRESHOLD TOP ELEVATION AT 2,566 FT. 179.4 FT. ABOVE THRESHOLD TOP ELEVATION AT 20,000 FT. 979.9 FT. ABOVE THRESHOLD TRANSITION SURFACES EXISTS ALONG THE ENTIRE LENGTH, AND ON EACH SIDE, OF THE APPROACH SURFACE. THE WIDTH AND SLOPE ARE MEASURED PERPENDICULAR TO THE RUNWAY CENTERLINE/CENTERLINE EXTENDED. __________ TABLE 7 MISSED APPROACH SURFACE AREA NAVIGATION APPROACH _______________________________________________________________________ BEGINS 1,300 FT. ON APPROACH SIDE OF THRESHOLD LENGTH 7,800 FT. BEGINNING WIDTH 2,333.3 FT. WIDTH AT 7,800 FT. 6,200 FT. SLOPE 40:1 ELEVATION AT BEGINNING 22 FT. ABOVE THRESHOLD ELEVATION AT 7,800 FT. 217 FT. ABOVE THRESHOLD THE MISSED APPROACH SURFACE IS CENTERED ON THE RUNWAY CENTERLINE/CENTERLINE EXTENDED. __________ 6.3. SPECIAL CASES 6.3.2. Vehicular Traverse Ways 6.3.1. Catenaries In general, a vehicular traverse way shall be In most cases, the position and elevation of treated as any other obstruction, except that supporting towers will adequately represent the appropriate vehicle height allowance catenaries. These towers shall be treated as must be included in the elevation. (See any other potential obstruction. However, if "Obstruction Exemptions" in this subsection one, or both, towers are outside the limits of for possible exemptions that may apply to the obstruction surface, the catenary itself vehicular traverse ways). may become a significant obstruction. In these cases, a position and elevation shall be provided on the imaginary straight line Vehicle Height Allowances follow: connecting the tops of the two adjacent catenary support towers at the highest point Noninterstate roads 15 feet within the obstruction surface. The elevation of this point shall be carried as an Interstate roads 17 feet estimated maximum elevation (EME). Railroads 23 feet 6.3.6. Manmade Objects Equal to or Greater than 200 Feet Above Ground Level (AGL) 6.3.3. Mobile Obstructions The AGL elevation shall be determined for Representative obstructions that are mobile manmade objects equal to, or greater than, within a defined area (except vehicles on 200 feet AGL. The AGL shall be measured roads and railroads, and vessels which are from the highest point of ground in contact treated under separate headings) shall have with either the object or the structure on an estimated maximum elevation (EME) which the object rests. This AGL determined for each area. EME points shall requirement applies only to representative be selected at: (1) the point nearest to the objects that normally would be carried on runway centerline at the threshold for ANA-LPV survey products and does not primary surface penetrations, (2) the most necessarily require measuring all 200+ AGL penetrating point for approach surface manmade objects in the survey area. penetrations, and (3) as appropriate to represent each mobile object area. (See 6.3.7. Obstruction Exemptions Figure 9) The following obstructions are not required The word "MOBILE," which always implies to be measured or carried on ANA-LPV an EME, shall be included in the object Conventional Landing products: name, such as, "MOBILE CRANE." - Vegetation that is both obstructing 6.3.4. Obstructions Under Construction by less than three feet and with a maximum cross sectional diameter Representative obstructions that are under no greater than one-half inch where construction shall be identified as being transected by an obstruction surface. under construction, such as, "BUILDING UNDER CONSTRUCTION." The - Annual vegetation, such as annual elevation at the time of the survey shall be weeds, corn, millet, and sugar cane. carried. However, if a construction crane extends above the feature under - Frangible objects under the control construction, it is necessary and sufficient to of airport authorities with locations carry the elevation and position of the crane. fixed by function. Examples are runway and taxiway signs, and 6.3.5. Vessels many approach light structures. Because of uncertainties in determining - Roads with restricted public access maximum vessel heights, travel limits, and that are intended for airport/facility frequency of passage, vessel heights and maintenance only. This exemption locations shall not be provided. However, if does not apply to airport service a possible obstructing condition exists, an roads associated with other airport obstructing vessel caution shall be provided operations, such as, food, fuel, and on ANA-LPV survey products cautioning freight transportation. that vessels may obstruct at certain times and that further investigation by the data - Construction equipment and user regarding maximum vessel height, debris, including dirt piles and batch travel limits, and frequency of passage is plants, that are: (1) temporary in advised. This exemption does not apply to nature, (2) under the control of vessels that are permanently moored. airport authorities, and (3) located on airport property. - Vessels. However, if a possible approach area and also higher than obstructing condition exists, an the threshold. These objects may obstructing vessel caution shall be or may not penetrate the approach provided on ANA-LPV survey surface and may be nonobstructing products cautioning that vessels may EME points. obstruct at certain times and that further investigation by the data user The highest obstruction between regarding maximum vessel height, 2,566 feet and 10,000 feet of an travel limits, and frequency of approach area. This area is the passage is advised. This exemption first 7,434 feet of the 34:1 slope does not apply to vessels that are area. permanently moored. The highest obstruction in the - Parked aircraft. The location and approach area. maximum elevation of individual parked aircraft cannot be determined - Transition Surfaces (See Figure 7) and shall not be provided under ANA-LPV surveys. This exemption The two highest obstructions in does not apply to aircraft that are the first 2,566 feet (as measured permanently parked for display along the runway centerline or purposes. centerline extended) of each transition area. 6.4. SELECTION The highest obstruction in the first 10,000 feet of each transition area. Obstruction selection shall include a representation of objects that penetrated The highest obstruction in each ANA-LPV OIS's at the time of the field transition area. survey. In addition, certain nonobstructing objects may be required in the first 2,566 - Missed Approach Surface (See Figure feet of the approach area. The special cases 8) that apply to obstructions (see Subsection 6.3) also apply to these required The highest obstruction and the nonobstructing objects. most penetrating obstruction on each side of the runway centerline Required objects/obstructions include: or centerline extended. - Primary Surface (See Figure 4) Note: obstructions may be EME points for obstructing mobile object areas. (See Figure The highest obstruction on the 9) approach side of the threshold. - Approach Surfaces (See Figures 5 and In some cases, strict adherence to the object 6) selection criteria listed above may result in congestion or inadequate obstruction The two most penetrating representation. To minimize these obstructions and the most situations, the following guidelines shall be penetrating man-made obstruction followed in object selection: in the first 2,566 feet of an approach area. - If objects that are required in the primary area or first 10,000 feet of an The two highest objects that are approach area are located within 100 within the first 2,566 feet of an feet of each other, the lower object may be omitted. (See Figure 6) 9. MISCELLANEOUS - If objects that are required outside the primary or first 10,000 of an approach AIRPORT REFERENCE POINT area are located within 500 feet of each other, the lower object may be omitted. The Airport Reference Point (ARP) shall be (Note: required primary or approach computed using the centerline end positions objects shall not be omitted because of of all usable runways. However, since the close proximity of higher objects runways without specially prepared hard outside of the primary or approach surfaces are often not required to be areas). (See Figure 6) surveyed, the ARP position for these airports shall be approximate. The ARP - When a required object is omitted shall be tagged with the year of the most because of congestion, a replacement recent runway end survey used in the ARP object/objects shall be selected if computation, such as, "ARP (1995)." possible that meets the spacing criteria. Procedures for computing ARP are - Occasionally, additional obstruction presented in FAA Standard No. 405, information may be useful in Appendix 2. representing certain obstructing conditions. While rigorous selection 10. DATA DELIVERY criteria is not practical, information useful to obstruction clearing activities NGS SURVEYS should be considered in the selection. ANA-LPV survey data shall be furnished in the Universal Data Delivery Format 7. PLANIMETRIC DETAIL (UDDF). UDDF information, including documentation, is available at: Planimetric detail is not required http://www.ngs.noaa.gov/AERO/uddf.html. The data shall be delivered to both Aeronautical Information Services and AVN and be designated as ANA-LPV survey. 8. METEOROLOGICAL APPARATUS 3RD PARTY SURVEYS Meteorological apparatus data is not required unless it is selected as a Refer to statement of Work for submission representative obstruction. of data.
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