题目内容
There must be bigger gaps between aircraft on ____ approach to both protect the ILS signal and to cope with slower runway vacation times.
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In addition, the airport itself has special considerations for low ____ operations.
The airport itself has special considerations for low visibility operations including different lighting for approach, runways, and taxiways as well as the location of ____ equipment.
Localizer and glideslope carrier frequencies are _____ so that only one selection is required to tune both receivers.
A pilot of an aircraft in instrument ____ conditions, by the means of radio, GPS or INS navigation with no assistance from air traffic control, can navigate to the airport.
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