Page:United States Statutes at Large Volume 101 Part 3.djvu/229

 PUBLIC LAW 100-223—DEC. 30, 1987

101 STAT. 1527

towers and other navigational aids. For each type of facility, the regulations shall, at a minimum, consider traffic density (number of aircraft operations without consideration of aircraft size), terrain and other obstacles to navigation, weather characteristics, passengers served, and potential aircraft operating efficiencies. SEC. 309. LONG-TERM AIRPORT CAPACITY NEEDS.

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(a) STUDY.—The Secretary shall conduct a study for the purpose of developing an overall airport system plan through the year 2010 which will assure the long-term availability of adequate airport system capacity. (h) REPORTS.— (1) PRELIMINARY REPORT.—Not

later than 1 year after the date of the enactment of this Act, the Secretary shall transmit to Congress a preliminary report on the status of the plan being developed under subsection (a). (2) FINAL REPORT.—Not later than January 1, 1990, the Secretary shall transmit to Congress a final report on the results of the study conducted under subsection (a), together with the plan developed under such subsection. (c) FUNDING.—There shall be available to the Secretary from the Airport and Airway Trust Fund $250,000 per fiscal year for each of fiscal years 1988 and 1989 for carrying out this section. Such funds shall remain available until expended. SEC. 310. RADIO NAVIGATION SYSTEMS.

49 USC app. 1348

(a) SYNCHRONIZATION.—

(1) LoRAN-c MASTER TRANSMITTERS.—Not later than Septemher 30, 1989, the Secretary shall take such action as may be necessary to synchronize all loran-C master transmitters located in the United States and all loran-C master transmitters subject to the jurisdiction of the United States. Each such master transmitter shall be synchronized to within approximately 100 nanoseconds of universal time.

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(2) OTHER LORAN-C TRANSMITTERS.— (A) IMPACT STUDY.—The Secretary

shall conduct a study of the impact on users of loran-C transmitted signals of synchronizing time of signal transmissions among all secondary loran-C transmitters in the United States in accordance with the standard set forth in the second sentence of paragraph (1). (B) REPORT.—Not later than September 30, 1989, the Secretary shall transmit to Congress a report on the results of the study conducted under subparagraph (A). (3) AUTHORIZATION.—There shall be available for carrying out this subsection from the Airport and Airway Trust Fund $750,000 for fiscal year 1988 and $500,000 for fiscal year 1989. Such funds shall remain available until expended. (b) INTEROPERABILITY OF RADIO NAVIGATION SYSTEMS.—

(1) STUDY.—The Secretary shall study and evaluate methods of coordinating the time references of the loran-C transmitter system and the global positioning satellite system to within approximately 30 nanoseconds of each other for the purpose of making possible the interchange of positioning data between the 2 systems.

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