EXPLORE SOLUTIONS NEEDS, GOALS, IDEAS, SOLUTIONS, AND ALTERNATIVESDRAFT BEND MUNICIPAL AIRPORT | AIRPORT MASTER PLAN
Chapter 4: Facility Goals/Requirements Introduction The facility goals and requirements analysis was developed based on the information obtained from project stakeholders during Regional Stakeholder Meeting #1, PAC Meeting #1/Open House #1, PAC Meeting #2, and stakeholder surveys. The justification and support for the proposed goals and requirements is presented here within and also in Chapter 2 - Existing Conditions Analysis and Chapter 3 - Aviation Activity Forecasts. Additional justification will be required before FAA funding can be programmed. The evaluation of airport facility goals and requirements utilizes established planning criteria to determine the future facility needs for Bend Municipal Airport through the current 20-year planning period within the Regional Setting, Landside Elements, Airside Elements, and Airport Administration Elements of the Airport. The facility goals and requirements evaluation is used to identify the adequacy or inadequacy of existing airport facilities, identify new facilities that may be desired by Airport users, and identify facilities required to satsify demand during the 20- year planning period. Potential options and preliminary costs for providing the recommended facilities anticipated to occur in the 20-year planning period will be evaluated in Chapter 5 - Airport Development Alternatives, to determine the most cost effective and efficient means for meeting projected facility goals and requirements.
PAC MEETING #2
PAC Meeting #2 served as the primary opportunity to discuss recommended facility goals and requirements with community stakeholders. The proposed goals and requirements were discussed with City staff in advance of the meeting and presented to the PAC. The facility goals and requirements presented throughout DRAFT this chapter DRAFTrepresent the wants, needs, and required facility improvements to satisfy future demand. FACILITY GOAL - The goals, policies, and objectives developed in response to issues/opportunities identified in the Existing Conditions Analysis and Aviation Activity Forecasts.
FACILITY REQUIREMENT - The facility improvements required to satisfy identified capacity/demand requirements and FAA standards.
EXPLORE SOLUTIONS - FACILITY GOALS AND REQUIREMENTS PAGE 143 BEND MUNICIPAL AIRPORT | AIRPORT MASTER PLAN Critical Aircraft and Airport Design Standards The existing and future critical aircraft are determined based on the current and projected level of activity described in Chapter 3, Aviation Activity Forecasts. The critical aircraft establishes existing and future airport planning & design standards that will guide future planning, design, and development of the Airport.
CRITICAL AIRCRAFT AND AIRPORT REFERENCE CODE As discussed in Chapter 3, the recommended existing and future critical aircraft is the Cessna Citation II/Bravo. The critical aircraft is intended to represent the most demanding aircraft using the airport on a regular basis and establish the Airport Reference Code (ARC) which is an airport designation that signifies the airports highest Runway Design Code (RDC), minus the visibility component of the RDC. The existing and future ARC for Bend Airport is B-II and will remain B-II throughout the planning period.
RUNWAY DESIGN CODE The Runway Design Code (RDC) is comprised of the selected Aircraft Approach Category (AAC), the Airplane Design Group (ADG), and the approach visibility minimums of a specific runway end. For airports with more than one runway, each runway will have its own RDC. The RDC provides the information needed to determine specific runway design standards. The approach visibility minimums refer to the visibility minimums expressed by runway visual range (RVR) values in feet. The existing RDC for the Runway 16/34 is B-II-5000. The future RDC for the airport will remain B-II-5000 throughout the planning period.
APPROACH AND DEPARTURE REFERENCE CODE The Approach and Departure Reference Codes (APRC and DPRC respectively) represent the current operational capabilities of each specific runway end and adjacent taxiways. The approach reference code uses the physical characteristics of the design aircraft (approach speed and wingspan/tail height) and the approach visibility minimums (expressed in RVR values) and runway to taxiway separation on the airfield to define specific standards. The existing APRC for Runway 16/34 is B-II-5000, The future APRC for the existing runway as well as that for any proposed runway is anticipated to remain B-II-5000. The departure reference code uses only the physical characteristics of the design aircraft and runway to taxiway separation. The existing and future DRPC for Runway 16/34 is B-II.
TAXIWAY DESIGN GROUP Taxiway Design Group (TDG) is based on the dimensions of the aircraft landing gear including distance from the cockpit to the main gear (CMG) and main gear width (MGW). These dimensions affect an aircraft’s ability to safely maneuver around the airport taxiways and dictate pavement fillet design. Taxiways and taxilanes can be constructed to different TDGs based on the expected use of that taxiway/taxilane by the design aircraft. Currently the primary taxiways providing access to and from the runway and apron areas at the airport accommodate ADG II aircraft, which is best represented by TDG II. Taxilanes in some hangar areas primarily serveDRAFT ADG I aircraft and are best represented by TDG IA.
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FAA DESIGN STANDARDS FAA Advisory Circular 150/5300-13A Airport Design serves as the primary reference in establishing the geometry of airfield facilities. A comparison of existing condition dimensions and future design standards for the runway is summarized in Table 4-1.
FAA DESIGN STANDARDS
Specific design standards and conditions applicable to Bend Municipal Airport facilities are presented in the following sections of this chapter within the sidebar “FAA Design Standards." For additional information reference appropriate sections within AC 150/5300-13A.
TABLE 4-1: FAA DESIGN STANDARDS SUMMARY RUNWAY 16/34 RUNWAY 16/34 ARC B-II ARC A/B-II RUNWAY 16/34 NOT LOWER THAN NOT LOWER THAN FAA STANDARD EXISTING CONDITIONS 1-MILE OR VISUAL 3/4-MILE EXISTING/FUTURE COMPARISON STANDARD STANDARD¹ Runway Length 5,200 1 A, B, C, D Runway Width 75 75 75 Runway Shoulder Width 10 10 10
Runway Obstacle Free Zone • Width 150 150 150 • Beyond RWY End 300 300 300 • Prior to Landing Threshold 300 300 300
Runway Obstacle Free Zone • Width 400 400 400 • Beyond RWY End 200 200 200 • Prior to Landing Threshold 200 200 200
Object Free Area • Width 500 500 500 • Beyond RWY End 300 300 300 • Prior to Landing Threshold 300 300 300 RWY 16: 1,000 RWY 16: 1,000 RWY 16: 1,700 Runway Protection Zone Length RWY 34: 1,000 RWY 34: 1,000 RWY 34: 1,700
RWY 16: 500 RWY 16: 500 RWY 16: 1000 Runway Protection Zone Inner Width RWY 34: 500 RWY 34: 500 RWY 34: 1000
RWY 16: 700 RWY 16: 700 RWY 16: 1,510 DRAFT Runway ProtectionDRAFT Zone Outer Width RWY 34: 700 RWY 34: 700 RWY 34: 1,510
Runway Centerline to: Parallel Taxiway/ 300 240 240 Taxilane CL Aircraft Parking Area 365² 250 250
Notes: 1. Not lower than ¾ mile B-II standards depicted for the purpose of comparison. 2. Distance between Runway 16/34 centerline and closest apron tiedowns.
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Flight Rules (VFR) hourly capacity of 98 operations, and an Airport Capacity and Delay Instrument Flight Rules (IFR) capacity of 59 operations. Airport capacity and annual aircraft delay computations are needed to design and evaluate airport development and The VFR and IFR hourly capacities for Runway use improvement projects. The method for computing airport configuration 1 are based on assumptions listed below. capacity and aircraft delay is described in FAA Advisory • Runway use configuration Circular 150-5060-5f (AC 5) Airport Capacity and Delay. • Percent of arrivals • Percent of Touch and Go operations TOTAL OPERATIONS AND AIRPORT CAPACITY • Taxiways Total operations combine the preferred forecasts for itinerant • Airspace limitations GA operations, local GA operations, and itinerant air taxi • Runway instrumentation operations. Table 2-1 in AC 5 details assumptions to be made for Combining preferred forecasts (itinerant GA, local GA and determining percent arrivals and percent Touch and Go itinerant air taxi) results in BDN reaching 84.5 percent of operations. The mix index between zero and 20 percent the Annual Service Volume (ASV) in 2038. Per, AC 5f ASV leads to the assumption that the percent of arrivals is 50 is a reasonable estimate of an airport’s annual capacity, it percent, and the percent of Touch and Go operations is accounts for differences in runway use, aircraft mix, weather between zero and 50 percent. These assumptions, which are conditions, etc., that would be encountered over a one incorporated into Figure 2-1 in AC 5 for determining runway year period. The estimate of an airport’s annual capacity is use configuration, results in an average daily demand of a measure of the maximum number of aircraft operations 290 operations in the peak month, and an average hourly which can be accommodated on an airport in an hour. demand of 9 operations in the peak month. BDN has two full As an airport reaches capacity, individual aircraft delay is length parallel taxiways with four entrance/exit taxiways and increased. An example of individual aircraft delay is when eight connector taxiways. There are no airspace limitations at arriving or departing aircraft must wait due to the amount of BDN that adversely impact operations. Runway 16/34 does traffic that is currently operating at an airport at a given time. not have an ILS or air traffic control tower (ATCT) but does When an airport exceeds its ASV, individual aircraft delay have published instrument approaches for both ends of the increases, resulting in airport users waiting longer to conduct runway. operations. Reductions in aircraft delay can be best achieved through airport improvements that increase capacity. BDN has a helipad that is 700 feet away from the existing runway. The separation between the helipad and the Using AC 5, the runway use configuration for BDN is centerline of the runway meets the minimum 700 feet for determined to be configuration 1. The mix index, which is simultaneous VFR operations. Helicopters operate on both the equation (C+3D) was used to determine the mix index the runway and helipad. To show how helicopter operations for BDN. In the equation, C is the percent of airplanes over affect capacity, two sets of data were generated. 12,500 pounds but not over 300,000 pounds that operate at BDN, and D is the percent of airplanes over 300,000 pounds Total operations that include helicopter operations, this that operate at BDN. Using the forecasted operations in the assumes all helicopters use only the runway. And total Forecast Chapter, the mix index was equated to be less than operations less helicopter operations, this assumes all one percent. With the mix index between zero percent and helicopters use only the helipad. Helicopters that only use the 20 percent, and the runway use configuration being 1, the helipad will reduce the amount of demand on the runway. ASV was determined to be 230,000 operations per year. Total operations including helicopter operations are shown in According to AC 5 runway use configuration 1 has a Visual Table 4-2 and Figure 4-1. Total operations less helicopter operations are shown in Table 4-3 and Figure 4-2.
TABLE 4-2: TOTAL OPERATIONS FORECAST – INCLUDING HELICOPTER OPERATIONS YEAR DRAFTTAF TOTAL OPS TAF % DIFFERENCE 2018 144,586 122,045 15.6% 2023 162,840 179,000 9.9% 2028 183,351 187,800 2.4% 2033 206,461 191,000 7.5% 2038 232,500 194,500 16.3% CAGR 2.4% 2.4% N/A CAGR: Compound Annual Growth
PAGE 146 EXPLORE SOLUTIONS - FACILITY GOALS AND REQUIREMENTS BEND MUNICIPAL AIRPORT | AIRPORT MASTER PLAN
FIGURE 4-1: TOTAL OPERATIONS FORECAST – INCLUDING HELICOPTER OPERATIONS
300,000 TAF Operations - Reach ASV in 250,000 2038 = 232,500
ASV - 230,000
200,000
150,000
100,000 Total Operations T O T AL O PERAT IONS 2038 = 194,500 2018 = 122,045 50,000 Total Operations
HISTORICAL PERIOD FORECAST PERIOD
0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
Total Operations FAA TAF Total Operations One Runway ASV Limit
Terminal Area Forecast (TAF) data is included as a point of reference. The TAF for BDN shows airport operations eventually crossing the ASV threshold. Whereas neither the total operations including helicopter operations nor total operations less helicopter operations totals cross the ASV within the twenty-year planning period.
Delay – Including Helicopter Operations Using AC 5, existing operations account for 53 percent of the ASV, an Annual Demand ASV ratio of 0.53. Using Figure 2-2 in AC 5f, Average Aircraft Delay for Long Range Planning, the average delay per aircraft in minutes ranges from 0.1 to 0.6 minutes. This results in a total annual aircraft delay ranging between 12,205 to 73,227 minutes. Future operations in 2038 will account for an Annual Demand ASV ratio of 0.85, 85 percent of ASV. Average delay per aircraft will range between 0.5 to 1.6 minutes. This results in a total annual aircraft delay ranging between 97,250 to 311,200 minutes. BDN will still have capacity to handle operations within the 20-year forecast period, however, average delay per aircraft will increase as BDN continues to see growth in total operations.
Delay – Less Helicopter Operations Using AC 5, existing operations account for 36 percent of the ASV, an Annual Demand ASV ratio of 0.36. Using Figure 2-2 DRAFT in AC 5f, Average AircraftDRAFT Delay for Long Range Planning, the average delay per aircraft in minutes ranges from 0.1 to 0.3 minutes. This results in a total annual aircraft delay ranging between 8,347 to 25,042 minutes. Future operations in 2038 will account for an Annual Demand ASV ratio of 0.68, 68 percent of ASV. Average delay per aircraft will range between 0.3 to 1.0 minutes. This results in a total annual aircraft delay ranging between 46,770 to 155,900 minutes. BDN will still have capacity to handle operations within the 20-year forecast period, however, average delay per aircraft will increase as BDN continues to see growth in total operations.
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TABLE 4-3: TOTAL OPERATIONS FORECAST – LESS HELICOPTER OPERATIONS YEAR TAF TOTAL OPS TAF % DIFFERENCE 2018 144,586 83,472 42.3% 2023 162,840 140,400 13.8% 2028 183,351 149,200 18.6% 2033 206,461 152,400 26.2% 2038 232,500 155,900 32.9% CAGR 2.4% 3.2% N/A CAGR: Compound Annual Growth
FIGURE 4-2: TOTAL OPERATIONS FORECAST – LESS HELICOPTER OPERATIONS
300,000 TAF Operations - Reach ASV in 250,000 2038 = 232,500
ASV - 230,000
200,000
150,000
100,000 T O T AL O PERAT IONS Total Operations - Less 2018 = 83,472 Helicopter Operations Total Operations 2038 = 155,900 50,000 - Less Helicopter Operations
HISTORICAL PERIOD FORECAST PERIOD
0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 Total OperationsDRAFTFAA TAF Total Operations One Runway ASV Limit
PAGE 148 EXPLORE SOLUTIONS - FACILITY GOALS AND REQUIREMENTS BEND MUNICIPAL AIRPORT | AIRPORT MASTER PLAN Regional Setting Goals and Requirements The goals and requirements for the Airport Regional Setting are comprised of those that affect the regional context of the Airport. The regional setting is focused on the impacts that the Airport has on the social, economic, and environmental issues of the region, county, and city. The regional setting impacts considered include, location and vicinity, socio-economic factors, airport operations and system role, relevant studies, environmental data, local surface transportation, and land use/zoning on and around the airport.