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initial approach

航空, 加拿大 That part of an instrument approach procedure IAP between the initial approach fix IAF or waypoint and the intermediate approach fix IF or waypoint during which the aircraft departs the en route phase of flight and manoeuvres to enter the intermediate segment
航空, 国际民航组织 That segment of an instrument approach procedure between the initial approach fix and the intermediate approach fix or, where applicable, the final approach fix or point
Initial Approach
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