Q. British Trident and U.S. L-1011 aircraft was certified for category III A operations.

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Q. Which of the following systems use a collection of radio transmitting stations to guide an aircraft to a particular runway?

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Q. How many ILS systems does an airport require?

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Q. _______ standardized the signal in space for the ILS ground transmitting equipment?

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Q. Where is the localizer antenna placed?

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Q. Which of the following is used to detect the failure in an ILS?

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Q. What is the type of polarization is used in ILS systems?

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Q. What is the frequency at which the marker beacons operate?

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Q. Localizer, Glide slope and DME frequencies are paired to each other.

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Q. What is the type of receiver used for marker beacon?

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Q. Which of the following cause multi path signals?

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Q. Which of the following transmits an audio Morse code?

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Q. ______________ provides deviation when the aircraft is displaced laterally from the vertical plane of the runway?

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Q. What is the signal that are added to the localizer signal, if the beam is narrow, to provide signal coverage?

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Q. What type of antenna is used in the localizer?

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Q. Clearance signals can be transmitted from the same array antenna as the localizer signal.

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Q. What is the type of glide slope that depends on the reflection of signals by the ground?

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Q. What is the radiation pattern of the marker beacons?

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Q. What is the main weakness of the ILS system?

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Q. What does the MLS use to overcome the weakness of ILS system?

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