104 STAT. 1378 PUBLIC LAW 101-507 —NOV. 5, 1990 departments and agencies represented on the Council pursuant to section 202(a) of such Act. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION RESEARCH AND DEVELOPMENT For necessary expenses, not otherwise provided for, including research, development, operations, services, minor construction, maintenance, repair, rehabilitation and modification of real and personal property; purchase, hire, maintenance, and operation of other than administrative aircraft, necessary for the conduct and support of aeronautical and space research and development activities of the National Aeronautics and Space Administration; $6,023,600,000, to remain available until September 30, 1992. SPACE FLIGHT, CONTROL AND DATA COMMUNICATIONS For necessary expenses, not otherwise provided for, in support of space flight, spacecraft control and communications activities of the National Aeronautics and Space Administration, including operations, production, services, minor construction, maintenance, repair, rehabilitation, and modification of real and personal property; tracking and data relay satellite services as authorized by law; purchase, hire, maintenance and operation of other than administrative aircraft; $6,334,132,000, to remain available until September 30, 1992, of which $1,209,732,000 shall be used only for the purpose of payment, to the Federal Financing Bank, for the Tracking and Data Relay Satellite System (TDRSS) loan: Provided, That such payment shall constitute settlement of all amounts owed on said loan: Provided further. That of the amounts provided herein for development and production of the Advanced Solid Rocket Motor (ASRM), $15,000,000 shall be available without fiscal year limitation for the competitive award of a contract to develop either (1) a second domestic source for the development and production of the ASRM carbon/carbon integral throat entrance (ITE) or (2) a second domestic source for the production of the ASRM carbon/carbon ITE unless the Administrator of NASA certifies to the Congress by February 1, 1991, that such application of funds is not in the best interest of the United States space program on the basis of cost, added assurance of reliable supply, expanded technology base, and technical risk reduction. CONSTRUCTION OF FACILITIES For construction, repair, rehabilitation and modification of facilities, minor construction of new facilities and additions to existing facilities, and for facility planning and design not otherwise provided, for the National Aeronautics and Space Administration, and for the acquisition or condemnation of real property, as authorized by law, and, notwithstanding the limitations on the availability of funds appropriated under this heading by this appropriations Act, an amount of $10,000,000 appropriated hereunder is to remain available without fiscal year limitation and is appropriated for the operation and maintenance of a new visitor center on the Lyndon B. Johnson Space Center to be constructed solely through the use of nonappropriated funds and for the provision of ancillary features such as roads, parking lots, utility services, and exhibits, and with-
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