D4S Technical Supp (

SUPPLEMENT submitted by DIRECTV Enterprises, LLC

D4S Technical Supplement

2012-01-05

This document pretains to SAT-MOD-20111102-00211 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2011110200211_933057

January 5, 2012 BY ELECTRONIC FILING Marlene H. Dortch, Secretary Federal Communications Commission 445 Twelfth Street, S.W. Washington, DC 20554 Re: IBFS File No. SAT-MOD-20111102-00211 Dear Ms. Dortch: At the request of the International Bureau staff, DIRECTV Enterprises, LLC (“DIRECTV”) hereby provides supplemental technical information in support of the above referenced application to extend the license of the DIRECTV 4S spacecraft. Specifically, information regarding the approximate amount of residual helium and xenon gas that cannot be vented at the end of operational life is as follows: TANK VOLUME (M3) PRESSURE (KPA) TEMP. (° C) MASS (KG) HE1 0.0427 1671.4 20 0.0683 HE2 0.0427 1671.4 20 0.0683 XE1 0.0327 1820 20 3.5954 XE2 0.0327 1820 20 3.5927 Should you have any questions, please do not hesitate to contact me. Respectfully submitted, /s/ William M. Wiltshire Counsel for DIRECTV


Document Created: 2012-01-05 14:07:53
Document Modified: 2012-01-05 14:07:53
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