C1 STAT.] AUSTRALIA--AIR SERVICE FACILITIES-MAR . 10, 1947 3845 voice transmissions are promulgated by the Provisional International Civil Aviation Organisation and further, until such regulations are promulgated, to grant permission to a representative of the United States air carriers authorised to serve an aerodrome to enter its control tower and, when in the opinion of the representative a case of necessity exists, to talk to the pilot of any United States aircraft flying in the vicinity of the aerodrome. VI. To select radio frequencies for air-to-ground and control tower operations at an aerodrome only after co-ordination with the United States air carriers using the aerodrome and with adjacent stations in the recognised international air routes converging on the aerodrome in order to minimise - (a) radio interference; and (b) the number of frequencies required to be operated by aircraft. VII. To authorise and facilitate day-to-day adjustment in aeronau- tical communication service matters by direct communication between the operating agency of the Government of Australia and the service agency of the Government of the United States, United States air car- riers or a communication company representing one or more of them. VIII. To authorise United States air carriers of the Civil Aeronautics Techcal officer. Administration of the United States to designate a technical officer to advise and assist the agency designated by the Government of Aus- tralia to operate the facilities insofar as they relate to the safety and efficiency of the United States airline operations. This designation is to continue as long as it is useful to United States air carriers. IN FAITH WHEREOF the Plenipotentiaries of the Government of Australia and the Government of the United States of America have hereunto signed their names. DONE in duplicate at Canberra this tenth day of March, in the year of Our Lord, One thousand nine hundred and forty-seven. For the Government of Australia. H EVATT For the Government of the United States of America. ROBERT BUTTLB - 2
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