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Distance Meac_Lring~F ~jAment (DMEI -Equipment (airborne and <br />ground) used to measure, in nautical miles, the slant range distance of <br />an aircraft from the DME navigational aid (see VORTAC or <br />Microwave Landing System). <br />frequenry navigation <br />magnetic north, perk <br />1CAN azimuth, <br />at one site. <br />-A <br />and <br />1 Range Station (VOR) - A <br />aid transmitting very high <br />es in azimuth, oriented from <br />itself by Morse Code. <br />. Wind Sock -Cloth sleeve, mounted aloft at an airport and used to <br />.estimate wind direction and velocity. ` <br />. ~jnd Tee -Indicator of wind direction for takeoff and landings. '~ <br />j~j~Q 111- Provides voice communication between pilot and airport. <br />Can also be used by pilot to activate airfield lighting. <br />After the initial inventory investigation, a major difference was noted between <br />offered NAVAID facilities at Minneapolis-St. Paul International and the other <br />system airports. Because part of the study focused on the potential to draw general <br />aviation traffic away from Minneapolis-St. Paul International, it was important to <br />examine NAVAID facilities at Minneapolis-St. Paul International. The following aze <br />a list of additional navigational facilities found at the airport: <br />j8w Level Wind-Sheaz Alert , tem (LLW-SAS) - A system to alert <br />pilots of wind shears, a change in wind speed and/or wind direction in <br />a short distance, critical during landing. <br />Rutnvay Visual Range (RVR) - An instrumentally derived value, based <br />on standard calibration, that represents the horizontal distance a pilot <br />will see down the runway from its approach end <br />. $jmnlified Short Agptoa h .+~g~,ystem (SSALR) -High intensity <br />lighting system with runway alignment indicator lights. <br />Aviation Fundamentals, 6th Edition, 1981. <br />I-42 <br />