21. With the exception of regulatory functions and air traffic services , airlines and airport authorities are privately owned. 22. Operation and upgrading of the airspace management was granted to Cambodian Air Traffic Services under a concession. 23. No landing aids are available and the only air traffic service is an Aerodrome Flight Information Service. 24. The 3rd Battalion, 58th Aviation Regiment ( Air Traffic Services ) joined the Brigade on 16 June 1992. 25. All air traffic service units will provide an FIS to any aircraft, in addition to their other tasks. 26. When the Federal Aviation Administration was formed two years later, he took charge of its Air Traffic Service . 27. Today, several countries, including Germany, Canada and New Zealand, have successfully contracted air traffic services to private companies. 28. He eventually became FAA's Air Traffic Service director and retired as an Assistant Administrator for Appraisal in 1973. 29. Turkish civil aviation authorities are quite eligible to perform all air traffic services in the Aegean according to standards. 30. Its functions also extend to overseeing airport facilities, air traffic services and carriage of passengers and goods by air.
