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INVENTORY OF EXISTING CONDITIONS then continue onward toward the cargo apron. The configuration of the taxiways in this area will be further assessed in the Facility Requirements and Alternatives chapters of this master plan. FIGURE 1-6 FAA AIRPORT DIAGRAM Source: Federal Aviation Administration Airport Diagram, Prepared by RS&H, 2016 Navigational Aids and Lighting Navigational aids and lighting, often referred to as NAVAIDS include visual aids, electronic aids, and meteorological aids. EUG features all three types of aids which are detailed in the following sections. 1.4.5.1Visual Aids Visual aids and airfield lighting are necessary to facilitate flight operations and enhance safety during periods of inclement weather and/or darkness by providing guidance to pilots in the air and on the ground. Visual aids at EUG are listed in Table 1-4. In addition to those listed, the Airport has a rotating beacon, and lighted wind cones near each runway end as well as adjacent to the commercial apron. 1.4.5.2Electronic Aids Electronic Aids include devices and equipment used for aircraft instrument approaches, which are listed in Table 1-4. Some approaches rely on Very High Frequency Omni-Directional Range (VOR), which is a ground-based facility that transmits high frequency radio signals 360 degrees in azimuth from the station. These signals help the pilot turn at a given point above the ground or fly along a radial to/from the station. There is one VOR station on the Airport named “Eugene VORTAC.” which is a combination VOR and tactical air navigation system, or TACAN, which also provides omnidirectional azimuth bearing information for military aircraft. The VORTAC is placed west of Runway 16R-34L. The Eugene VORTAC includes Distance Measuring Equipment (DME) which allows pilots to determine their distance from a land-based transponder. TACANs are generally more accurate than a combined EUGENE AIRPORT MASTER PLAN 1-12