PUBLIC LAW 102-143—OCT. 28, 1991 105 STAT. 923 Contracts. Kentucky. only for the procurement of not less than five commissionable systems of the electronic scan (E-scan) design: Provided further, That for each seven-day period following March 31, 1992, that the E- scan precision runway monitor production contract is not signed, the funds made available for facilities and equipment-related personnel compensation and benefits shall be reduced by 1 per centum: Provided further, That a stand alone directional finder Maryland FAA-5530 receiver indicator system is to be installed at the Salisbury, Maryland airport flight service station within 180 days of enactment of this Act: Provided further. That funds appropriated under this heading for this or prior years are available for the Federal Aviation Administration to enter into a sole source procurement with the Regional Airport Authority of Louisville-Jefferson County, Kentucky to design and construct an air traffic control tower at Standiford Field, using current Federal Aviation Administration control tower specifications. RESEARCH, ENGINEERING, AND DEVELOPMENT (AIRPORT AND AIRWAY TRUST FUND) For necessary expenses, not otherwise provided for, for research, engineering, and development, in accordance with the provisions of the Federal Aviation Act of 1958, as amended (49 U.S.C. App. 1301 et seq.), including construction of experimental facilities and acquisition of necessary sites by lease or grant, $218,135,000, to be derived from the Airport and Airway Trust Fund and to remain available until expended: Provided, That there may be credited to this appropriation funds received from States, counties, municipalities, other public authorities, and private sources, for expenses incurred for research, engineering, and development. GRANTS-IN-AID FOR AIRPORTS (UQUIDATION OF CONTRACT AUTHORIZATION) (AIRPORT AND AIRWAY TRUST FUND) For liquidation of obligations incurred for airport planning and development under section 14 of Public Law 91-258, as amended, and under other law authorizing such obligations, and obligations for noise compatibility planning and programs, $1,520,000,000, to be derived from the Airport and Airway Trust Fund and to remain available until expended: Provided, That none of the funds in this Act shall be available for the planning or execution of programs the commitments for which are in excess of $1,900,000,000 in fiscal year 1992 for grants-in-aid for airport planning and development, and noise compatibility planning and programs, notwithstanding section 506(e)(4) of the Airport and Airway Improvement Act of 1982, as amended, of which not to exceed $156,564,400 shall be available for letters of intent issued prior to July 31, 1991. AVIATION INSURANCE REVOLVING FUND The Secretary of Transportation is hereby authorized to make such expenditures and investments, within the limits of funds available pursuant to section 1306 of the Act of August 23, 1958, as amended (49 U.S.C. 1536), and in accordance with section 104 of the
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