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—._, Mail Processing Center Aeronautical Study No. <br /> Federal Aviation Administration 2012-AGL-10311-OE <br /> Southwest Regional Office Prior Study No. <br /> Obstruction Evaluation Group 2011-AGL-3900-OE <br /> 2601 Meacham Boulevard <br /> Fort Worth, TX 76137 <br /> Issued Date: 12/14/2012 <br /> Dave Magnum <br /> Magnum Communications, Inc. <br /> N6837 Bobbi Road <br /> Pardeeville, WI 53954 <br /> **LIGHTING DEVIATION RECOMMENDATION** <br /> The Federal Aviation Administration has completed an evaluation of your request concerning: <br /> Structure: Antenna Tower Brooklyn Tower <br /> Location: Brooklyn, WI <br /> Latitude: 42-51-15.46N NAD 83 <br /> Longitude: 89-17-41.31W <br /> Heights: 962 feet site elevation(SE) <br /> 489 feet above ground level (AGL) <br /> 1451 feet above mean sea level (AMSL) <br /> Based on this evaluation, we have no objection to the request to deviate from the standards outlined in the FAA <br /> Advisory Circular 70/7460-1 K Change 2 Obstruction Marking and Lighting, Chapter 5. <br /> The FAA finds that for those towers 151-350 feet AGL that normally require only one top mounted Flashing <br /> Red Obstruction(L-864) light and one level of Steady-burning Red Obstruction(L-810) lights, it is necessary <br /> to either configure the existing L-810s to flash at the same rate as the L-864 or replace the L-810 with a L-864 <br /> configured to flash simultaneously. Flash rates must be 30 flashes per minute (+ 3 flashes). <br /> The FAA finds that for structures 351 feet AGL and above, the absence of steady burning Red Obstruction <br /> (L-810) lights on this structure will not impair aviation safety. However, aeronautical study revealed that the <br /> structure should continue to be lighted with the appropriate Flashing Red Obstruction (L-864) lights. Flash rates <br /> must be 30 flashes per minute (+ 3 flashes). <br /> If this structure is subject to the authority of the Federal Communications Commission a copy of this letter <br /> will be forwarded to them and application should be made for permission to change the marking/lighting as <br /> requested. <br /> This evaluation concerns the effect of the marking/lighting changes on the safe and efficient use of navigable <br /> airspace by aircraft and does not relieve the sponsor of compliance responsibilities relating to any law, <br /> ordinance, or regulation of any Federal, State, or local government body. <br /> Page 1 of 2 <br />