题目内容
The Instrument Landing System is used for the ____ approach.
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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.
Controller relays precise ____ for adjustment of heading and altitude to the pilot in the approaching aircraft.
For larger aircraft it is typical that these approaches are under the control of the flight control system with the flight crew providing a ____ role.
This is becoming increasingly popular with "____" airlines and most manufacturers of regional jets are now offering HUDs as either standard or optional equipment.
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