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National Security Area : ウィキペディア英語版 | National Security Area In United States aviation, a National Security Area is a designated airspace through which flight is discouraged for reasons of national security. Flight through NSAs is not prohibited and no special advance clearance or authorization need be obtained to enter them. However, pilots of aircraft are strongly encouraged to either stay clear of NSAs or obtain prior authorization to pass through them in order to reassure the controlling agency that no threat to national security exists. NSAs are a compromise between normal airspace and restricted or prohibited airspace. NSAs can be temporarily converted into restricted airspace by NOTAMs. On VFR sectional charts, NSAs are delimited by a heavy dashed magenta border and a special notation. ==See also==
*Special-use airspace *Restricted airspace *Prohibited airspace
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「National Security Area」の詳細全文を読む
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