题目内容
Hold in the ____ of the airport if required, then fly to a position from where he or she can obtain sufficient visual reference of the runway for a safe landing to be made.
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The whole of the approach is defined and published in this way so that aircraft can land if they suffer from radio failure; it also allows instrument approaches to be made ____ at airports where air traffic control does not use radar or in the case of radar failure.
Radar vector refers to the provision of headings on which the controller expects the pilot to ____ his aircraft.
The Instrument Landing System is used for the ____ approach.
In the case of the rarely-used Ground-Controlled Approach (GCA), the instrumentation (normally Precision Approach Radar) is on the ground and ____ by a controller.
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