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机场雷达服务区
avia.
airport radar service area
(指定机场周围的管制空域,在该空域内由空中交通管制向所有仪表飞行规则 (IFR )和目视飞行规则 (VFR)飞机提供专门的雷达导引和排序服务。 ARSA 服务包括标准 IFR/IFR, IFR 间隔;IFR/VFR 交通咨询和冲突解决; VFR/VFR 交通咨询和适当的安全警告。在 VFR 航图中对 ARSA 进行描述。该词已被 Airspace Class C (C 级空域)所代替)
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