Attachment Letter to Federal Co

This document pretains to SAT-MOD-20101118-00239 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2010111800239_900180

International Organisation Organizacion MexpynapogHaa ) jilall Lelie E i E MA Civil Aviation de Faviation civile de Aviacion Civil oprahnmsauusa . Organization internationale Internacional FPaKpaHckon ‘fb'fl\ 95"'\“'“ fi}"f, ';;E ?fl g,':l aBMaunn Ref: AN 7/5 — CNS41541 13 June 2011 Mr. Julius Genachowski Chairman Federal Communications Commission (FCC) 445 12th Street, SW Washington, DC 20554 United States Dear Mr. Genachowski, We are writing to you about an issue of grave concern to the international civil aviation community, in connection with Federal Communications Commission (FCC) Order and Authorization DA 11—133, adopted on 26 January 2011. As you are aware, the Order granted LightSquared Subsidiary LLC a conditional waiver of FCC rules, enabling the company to use terrestrial—only devices in a band adjacent to that in which the global positioning system (GPS) operates. Subsequent to the Order being issued, studies have shown that LightSquared transmissions would have a dramatic impact on aviation GPS receivers. Specifically, the conclusion reached by an authoritative aviation industry body (RTCA, Inc.), after an exhaustive technical investigation, is that the proposed LightSquared operation would be incompatible with the current aviation use of GPS. The safety and efficiency of aviation operations today are already, to a substantial extent, reliant on the invaluable position, navigation and timing service provided by GPS. Ongoing aviation developments, such as those being undertaken in the framework of United States NextGen programme and the European SESAR programme, will place even more emphasis on the central role of GPS and other satellite navigation systems in aviation operations. Therefore, the potential disruption to aviation use of GPS caused by the LightSquared system would have a far—reaching impact on current and future aviation operations. The impact would not only be limited to the United States. The international aircraft fleet flying into the United States would be directly affected and also similar developments could arise elsewhere and propagate the disruption beyond their borders. 999 University Street Tel.: +1 514—954—8219 E—mail: icaohq@icao.int Montréal, Quebec Fax: +1 514—954—6077 www.icao.int Canada H3C 5H7

—2 . In September 2007, the United States Government reaffirmed its commitment to provide the GPS Standard Positioning Service (SPS) for aviation throughout the world. This commitment, first expressed in 1994, was the foundation for the development of key GPS aircraft navigation applications, based on ICAO international standards and procedures, which today support safer and more efficient aviation operations worldwide. We urge you to ensure that this vital commitment is not unintentionally jeopardized by the introduction of the LightSquared system and the ensuing impact on GPS use by aviation. Yours sincerely, > Roberto Kobeh Gonzalez President of the Council SKretary General ce: Mr. Raymond H. LaHood United States Secretary of Transportation U.S. Department of Transportation Mr. J. Randolph Babbitt Administrator Federal Aviation Administration (FAA) Representative of the United States on the Council of ICAO


Document Created: 2011-06-28 15:02:33
Document Modified: 2011-06-28 15:02:33
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