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特殊规则区域
avia.
special rules zone
(机场周围受保护的一片地区,从地表向上延伸到特定的高度。对于那些交通水平不足以建立控制区的机场,特殊规则区域保障机场周围空中交通通话的安全。特殊规则地区 (SRA)虽然也垂直和水平向上延伸到一定的高度,但并非必须达到与 SRZ 相同的高度结果)
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