题目内容
An aircraft that has ____ both the localizer and the glideslope signal is said to be established on the approach.
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Once ____ on an approach, the Autoland system or pilot will follow the ILS and descend along the glideslope, until the Decision Altitude is reached.
From the Decision Altitude, the pilot will either try the same approach again or ____ to another airport.
We can execute a ____ if the visibility is below the minimums required to execute a safe landing.
It also allows instrument approaches to be made procedurally at airports where air traffic control does not use ____or in the case of ____ failure.
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