2A533A Volume 4 CDC Test

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To get a FROM flag in view on the horizontal situation indicator when the magnetic bearing to the very-high frequency omnirange station is 75 degrees, the selected course should be manually set to 210 degrees. This is because the FROM flag indicates that the aircraft is flying away from the station, and to achieve this, the selected course should be set 180 degrees opposite to the magnetic bearing of the station. Therefore, setting the course to 210 degrees would ensure that the aircraft is flying away from the station and the FROM flag is displayed.

When the AN/ARN-127 is operating in the instrument landing system mode, it provides glide slope information to the attitude director indicator in the form of UP/down deviations. This means that the indicator will display whether the aircraft is above or below the desired glide path for landing.

The AN/ARN-118 system has a maximum of 252 tactical air navigation channels available for use.

Very-high frequency omnirange aural signals are transmitted continuously. This means that the signals are constantly being transmitted without any breaks or interruptions. Unlike the other options, where the signals are transmitted at specific intervals (either 5 microseconds or 5 seconds), the correct answer states that the signals are transmitted continuously, indicating a continuous and uninterrupted transmission of the signals.

The correct answer is steering indications. Microwave landing systems provide steering indications to the pilot and copilot's horizontal situation and attitude director indicators for approach and takeoff. These indications help the pilots maintain the correct course and alignment during these critical phases of flight.

The integrated display computer unit allows for the selection of system status in the microwave landing system. This component is responsible for displaying information and allowing the user to interact with the system. It provides the necessary controls and options to select the desired system status, ensuring effective operation and control of the microwave landing system.

If the aircraft is located north of the very-high frequency omnirange station, it will be positioned on the 000 degrees radial. This is because the radial represents a specific direction or bearing from the station, and 000 degrees corresponds to the north direction.

When the instrument landing system marker beacon amber (orange) lamp illuminates, the pilot hears a 1,300 Hz tone.

The purpose of the tactical air navigation system is to provide the pilot with accurate distance, bearing, and aural information. This means that the system is designed to give the pilot precise measurements of the distance between the aircraft and its destination, the direction in which the aircraft should travel, and any relevant audio cues or alerts that the pilot needs to be aware of. This comprehensive information helps the pilot navigate effectively and make informed decisions during the flight.

The purpose of the very-high omnirange system is to determine the bearing to a station. This system helps pilots navigate by providing them with accurate directional information, allowing them to determine the direction of a specific station or navigation aid. This information is crucial for pilots to maintain their intended course and navigate safely to their destination.

The microwave landing systems receivers are capable of operating on 200 channels.

The instrument landing system marker beacon carrier frequency is 75 MHz. This frequency is used for transmitting signals to aircraft during instrument landings, providing pilots with information about their position relative to the runway. The marker beacons help pilots determine their distance from the runway threshold, aiding in safe and accurate landings.

Microwave landing system numbers 1 and 2 share antennas 3 and 4.

A full scale deflection of the horizontal situation indicator vertical needle during instrument landing system operation indicates that the aircraft is off course from the runway centerline by 2.5 degrees.

In VOR mode, the ARN-147 VOR/localizer receiver sends information to the horizontal situation indicator in the form of left/right deviation, flag alarm, and TO/FROM indication. This means that the receiver provides the pilot with information about their lateral position relative to the VOR station, alerts them if there is a malfunction or issue with the signal, and indicates whether they are flying towards or away from the station.

The main reference burst is transmitted when the main lobe of the tactical air navigation surface beacon radiation pattern is due East.

The AN/ARN-147 VOR/ILS control box can select a total of 200 very-high frequency omnirange/instrument landing system (VOR/ILS) channels.

A tactical air navigation surface beacon provides a station identification code (beacon identity tone) every 30 seconds. This means that every 30 seconds, the beacon emits a specific code or tone that identifies the station. This helps pilots and air traffic controllers to identify and locate the beacon, aiding in navigation and communication during tactical operations.

The correct answer is 5031-5091 MHz. This frequency range is the range at which the microwave landing system receivers operate. It is important for the receivers to operate within this specific frequency range in order to accurately receive and process the signals from the microwave landing system.

When an instrument landing system frequency is selected, the ARN-127 very-high frequency omnirange receiver parks the horizontal situation indicator bearing pointer at the 4 o'clock position.

A deflection of two dots on the attitude director indicator glide slope deviation scale indicates that the aircraft is 0.6 degrees off the glide path.

UHF stands for Ultra High Frequency. It is a frequency band that is commonly used for transmitting instrument landing system glide slope information. This frequency band is ideal for aviation purposes as it provides a good balance between signal range and bandwidth. The UHF frequency band is typically used for short to medium-range communication and is well-suited for transmitting navigation signals for instrument landing systems.

During tactical air navigation operation, the two signals phased compared to produce the fine bearing +- 1 degree are the 135-Hz variable and ARB.

The relative bearing is the angle between the aircraft's heading and the direction of the target. In this case, the aircraft's magnetic heading is 45 degrees and the magnetic bearing to the TACAN station is 5 degrees. To find the relative bearing, we subtract the magnetic bearing from the magnetic heading: 45 degrees - 5 degrees = 40 degrees. However, since the relative bearing is always measured clockwise from the aircraft's nose, we subtract the result from 360 degrees: 360 degrees - 40 degrees = 320 degrees. Therefore, the correct answer is 320 degrees.

When the main reference burst occurs at the minimum amplitude of the 15-Hz variable signal in tactical air navigation, it indicates that the aircraft is directly facing the station. In this position, the azimuth to the station is 90 degrees.

The phase difference between the 30-Hertz reference and 30-Hertz variable signal is 45 degrees.

In the tactical air navigation mode, each dot on the horizontal situation indicator represents an error from the selected course of 5 degrees. This means that if the aircraft deviates from the planned course by one dot on the indicator, it is off track by 5 degrees. The larger the deviation, the further the aircraft is from its intended path. Therefore, a deviation of 5 degrees indicates a significant error in navigation.

If the very-high frequency omnirange station signal is lost or the receiver malfunctions, the ARN-147 system parks the bearing pointer at the 3 o'clock position.

The instrument landing system localizer course width at a distance of 10 miles from the transmitter is normally 5 degrees. The localizer course width refers to the width of the signal beam emitted by the instrument landing system. At a distance of 10 miles, the width is typically 5 degrees, indicating the precision and accuracy of the system in guiding aircraft during the landing approach.