Attachment REQUEST

REQUEST

LETTER submitted by FCC,IB

REQUEST

2004-10-01

This document pretains to SAT-AMD-19990108-00004 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD1999010800004_399145

;1/-"/ ) Federal Communications Commission J Washington, DC 20554 C Y inomatona Burnu October 1, 2004 Jeffiey Olson, Esquire Paul, Weiss, Rifkind, Wharton & Garrison LLP 1615 L Street, NW Washington, DC 20036 Re: Orbial Debris Mitigation: SkyBridge LLC., Application for Authority to Launch and operate the SkyBridge Satellte System — File Nos, SAT—LOA— 19970228—00021; SAT—AMD—19970703—00058; SAT—AMD—19980630— go0sé; SAT—AMD—19990108—00004; SAT—AMD—20020917—00167; SAT— AMD—20040719—00135; Call Sign $2241. Dear Mr.Olson: "This leter requests additional information, pursuantto Section 25.1 1(a)ofthe Commission‘s Rules regarding the orbital debris mitigation plan ofhe Skyridge satelte system. SkyBridge has provided the Commission with information concerning a number ofmeasures that it will employ in order to mitigate orbital debris, however, SkyBridge did not specifically addressthe issue ofpotential collsions wit large objects." Therefore, we request that SkyBridge provide the following information: 1) A statement as to whether SkyBridge has assessed and limited the probabilty of its satelites becoming a source ofdebris by collision with large debris or other functioning satllites 2) Please indicate whether there are any other NGSO constelltions, currently in orbit or planned, with similar orbital charaetersts (Le. spogee, perigee, inclination, or RAAN) such that the volumes in which the satelites will orbit substantilly overlap. If there are, please provide an analysis of the potentialrisk oin—orbit collision and a description ofany measures SkyBridge plans to take to avoid such collsion; 3) Please specify the tolerance, during the operational life of the satelte, to which the following orbital parameters willbe maintained: a. Apogee b. Perigee ¢. Incliation 4. RAAN . Satllte phasing, fo orbits with more than one satelite. ! Amendmentto application, SAT—AMD—20020917—00167, Exhibi C to Form 312, °Orbital Debris Mitigation:"

We also note that the SkyBridge amendment statesthat "SkyBridge will ... maintain sttionkecping to within 0.1°72 tis unclea as to what parameter this statement refers. We request that SkyBridee clarify this statement concerming is orbital configuration. In order for us t continue processing the SkyBrides space station application, we require that the above information be provided by October 15,2004. IFyou have any questions you may either contact Sankar Persaud at (202) 418—2441 or by e—mail at Sankar.Persand@ec.cov or Karl Kensinger at (202) 418—2441 or by e—mail at KarlKensinger@cc.gov. posis _ €7 W Qms%S. Tycz Q—Thoma Chie Sarelfite Division * Amendment to appleation, SAT—AMD—20020917—00167, Exhbit C to Form 312, "Orbial Dcbris Mitigation," page 8.


Document Created: 2004-10-01 11:20:07
Document Modified: 2004-10-01 11:20:07
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