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| 最低仪表飞行规则高度 (为在特殊空域使用而制定的最低的仪表飞行规则高度。根据相关的空域，最小仪表飞行高度可能是最低静空高度 (MOCA)、最低航路高度 (MEA)、最低区域高度 (MSA)、最低引导飞行高度 (MVA)、地理区域安全高度 (GASA),100 mile 安全高度、过渡区高度或中断进近高度，最低仪表飞行规则高度提供障碍间隔，但不一定在受控制空域。最低高度公布在航图中。当不指定最低高度时，应用下面的规则:①在指定山区，在距航线5 mile 的水平距离内,位于最高障碍物之上 2 000 ft 处；②在除山区之外的其他地区，在距航线5mile 的水平距离内，位于最高障碍物之上 1000 ft 处; ③在其他情况下，按空中交通管制部门或经营者认可的标准) | |||
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| The lowest IFR altitude established for use in a specific airspace. Depending on the airspace concerned, the minimum IFR altitude may be a minimum obstacle clearance altitude MOCA, a minimum en route altitude MEA, a minimum sector altitude MSA, a minimum vectoring altitude MVA, a safe altitude 100 NM, an area minimum altitude AMA, a transition altitude or a missed approach altitude. The minimum IFR altitude provides obstacle clearance but may or may not be within controlled airspace. | |||
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minimum IFR altitude : 2 phrases in 1 subject |
| Aviation | 2 |
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