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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Non-towered airport ： ウィキペディア英語版 Non-towered airport A non-towered airport is an airport with no operating tower, or air traffic control unit. The vast majority of the world's airports are non-towered, and even airports with control towers may operate as non-towered during off-hours, typically during the night. At non-towered airports, instead of receiving instructions from a tower controller, pilots follow recommended procedures. The exact procedures vary from country to country, but they often involve standard arrival and departure patterns, and they may also include radio calls over a common frequency, such as a Common Traffic Advisory Frequency in the United States, Canada, New Zealand and Australia. ==Criteria== When the traffic volume at an airport gets too high for safe and efficient operations, or when the mix of aircraft types and speeds becomes too large, an airport may be considered for a tower. However, it is also necessary to find the money to construct a building and pay the controllers' salaries; in some cases aviation regulations or local opposition may prevent establishment of the unit. For special events such as fly-ins, temporary towers may operate for only several days each year at fields that are otherwise non-towered. Temporary towers may operate out of an existing airport building, an RV, or even simply a chair (with a portable transmitter and binoculars). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Non-towered airport」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.