RADIO NAVIGATION SYSTEMS.

SEC. 310. RADIO NAVIGATION SYSTEMS. (a) Synchronization.— (1) Loran-c master transmitters.— Not later than September 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. (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. 101 STAT. 1528 (2) Report.— Not later than September 30, 1989, the Secretary shall transmit to Congress a report on the results of the study conducted under paragraph (1). (3) Authorization.— There shall be available for carrying out this subsection from the Airport and Airway Trust Fund $500,000 for fiscal year 1988. Such funds shall remain available until expended. (c) Development of Minimum Standards.— Not later than September 30, 1989, the Administrator shall establish by regulation minimum standards under which a radio navigation system may be certified as the sole radio navigation system required in an aircraft for operation in airspace of the United States.