| 31. | This report made recommendations for the future of the nation's air navigation and traffic control system.
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| 32. | Squitter pulses were originally, and are still, used in the DME / TACAN air navigation systems.
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| 33. | National Air Traffic Services hold the contract for provision of air navigation services at the airport.
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| 34. | These calculations are a basic part of air navigation and dead reckoning, taught to all aviators.
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| 35. | His early works, like " Air Navigation,"
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| 36. | The TACAN air navigation system on Skyline Ridge was moved 20 kilometers further south to another mountaintop.
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| 37. | By September 1942 saw another change of name to the No . 1 Elementary Air Navigation School.
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| 38. | The aerodrome also features doppler VHF omnidirectional range and distance measuring equipment, and tactical air navigation system.
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| 39. | She left Croydon on 5 May of that year and landed in Australia's 1921 Air Navigation Regulations.
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| 40. | Air navigation services continues as a state enterprise under the name LFV ( Civil Aviation Administration ).
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