2a553a CDC Volume 4

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  • 1/100 Questions

    Which acronym is used for the system that determines if an aircraft is a friend or foe?

    • TACAN
    • IFF
    • ADF
    • RADAR
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About This Quiz

This quiz, titled '2A553A CDC Volume 4', assesses knowledge on VOR and ILS navigation systems crucial for aviation. It covers the operation, signal comparison, and identification of VOR, alongside the ILS localizer and glide slope frequencies, preparing learners for advanced navigation competencies.

Navigation Systems Quizzes & Trivia

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  • 2. 

    The Navy Fleet Satellite Communications System satellites are in a geosynchronous equatorial orbit and provide overlapping Earth coverage in all areas, except

    • South America

    • Europe

    • The polar regions

    • The Far East

    Correct Answer
    A. The polar regions
    Explanation
    The Navy Fleet Satellite Communications System satellites are in a geosynchronous equatorial orbit, which means they are positioned above the Earth's equator and rotate at the same speed as the Earth. This allows them to provide continuous coverage to most areas on Earth, except for the polar regions. The polar regions are not covered because the satellites are positioned in such a way that they cannot effectively communicate with these areas due to the Earth's curvature.

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  • 3. 

    The interphone operation used for emergency or high-priority communications between crewmembers is the

    • Hot-mic function

    • CALL function

    • Interphone function

    • Monitor function

    Correct Answer
    A. CALL function
    Explanation
    The correct answer is the CALL function. The CALL function is used for emergency or high-priority communications between crewmembers. It allows crewmembers to quickly and effectively communicate urgent messages or requests. The hot-mic function refers to a microphone that is constantly active, while the interphone function refers to the overall operation of the interphone system. The monitor function is used to listen to communications without transmitting.

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  • 4. 

    When the IDENT-OUT-MIC switch is in the MIC position, identification, friend or foe system identification of position replies are triggered every time the

    • UHF radio is keyed

    • LHF radio is keyed

    • VHF radio is keyed

    • HF radio is keyed

    Correct Answer
    A. UHF radio is keyed
    Explanation
    When the IDENT-OUT-MIC switch is in the MIC position, the identification, friend or foe system triggers position replies every time the UHF radio is keyed. This means that whenever the UHF radio is activated, the system will send out identification signals to determine the position of friendly or enemy forces.

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  • 5. 

    The purpose of the battery in the KY-58/TSEC processor is to

    • Zeroize the codes after aircraft power is removed

    • Enable the secure voice system to be used as an emergency transmitter

    • Prevent the automatic zeroing of the codes after the aircraft power is removed

    • Enable the secure voice system to operate from aircraft power

    Correct Answer
    A. Prevent the automatic zeroing of the codes after the aircraft power is removed
    Explanation
    The battery in the KY-58/TSEC processor is used to prevent the automatic zeroing of the codes after the aircraft power is removed. This means that even if the power is disconnected, the battery will maintain power to the processor, ensuring that the codes are not erased. This is important for maintaining the security and integrity of the system, as it prevents unauthorized access or tampering with the codes.

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  • 6. 

    The basic operating principle of VOR is phase comparing the

    • 90 and 150 Hz modulated signals

    • 30 Hz reference and 9,960 Hz FM signals

    • 30 Hz variable and 9,960 Hz FM signals

    • 30 Hz reference and 30 Hz variable signals

    Correct Answer
    A. 30 Hz reference and 30 Hz variable signals
    Explanation
    The VOR (VHF Omnidirectional Range) operates by phase comparing the 30 Hz reference and 30 Hz variable signals. These signals are used to determine the aircraft's bearing in relation to the VOR station. By comparing the phase difference between the two signals, the VOR system can accurately determine the direction of the aircraft from the station. This information is then displayed to the pilot on the instrument panel, allowing for navigation and course corrections.

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  • 7. 

    The space segment of the Air Force satellite communication system is composed of several satellites equipped with

    • Receivers

    • Transponders

    • Transmitter

    • Encoders

    Correct Answer
    A. Transponders
    Explanation
    The space segment of the Air Force satellite communication system consists of multiple satellites that are equipped with transponders. Transponders are devices that receive signals from the ground, amplify them, and then retransmit them back to Earth. They play a crucial role in satellite communication by facilitating the transmission of signals between the satellite and the ground stations. Therefore, transponders are an essential component of the space segment of the Air Force satellite communication system.

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  • 8. 

    Once activated, the ELT continues to transmit until

    • Its transmitter burns up

    • The ELT operation switch is placed in AUTO

    • The g-force sensor circuit activates

    • Its self-contained batter pack is exhausted

    Correct Answer
    A. Its self-contained batter pack is exhausted
    Explanation
    The correct answer is that the ELT continues to transmit until its self-contained battery pack is exhausted. This means that once the battery power is depleted, the ELT will stop transmitting. The other options listed are not the correct answer because they do not indicate the point at which the ELT stops transmitting.

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  • 9. 

    TCAS symbols representing increasing levels of urgency or threat change

    • Shape and color

    • Shape and position

    • Color and size

    • Size and shape

    Correct Answer
    A. Shape and color
    Explanation
    The TCAS symbols represent increasing levels of urgency or threat, and they change in both shape and color. The change in shape helps to indicate the type of aircraft or object being detected, while the change in color helps to indicate the level of urgency or threat associated with that aircraft or object. Therefore, both shape and color are important factors in determining the urgency or threat level represented by the TCAS symbols.

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  • 10. 

    What is the maximum number of cyptopgraphic keys that can be transferred by the KYK-13 loading device?

    • 18

    • 6

    • 12

    • 10

    Correct Answer
    A. 6
    Explanation
    The maximum number of cryptographic keys that can be transferred by the KYK-13 loading device is 6.

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  • 11. 

    How is the CYZ-10 data transfer device (DTD) classified?

    • By data entry on the DTD key pad

    • Through the host/application section

    • By installing the crypto ignition key

    • By the DTD software load

    Correct Answer
    A. By installing the crypto ignition key
    Explanation
    The CYZ-10 data transfer device (DTD) is classified by installing the crypto ignition key. This means that the classification of the DTD is determined by the presence and installation of the crypto ignition key, which is a security measure used to protect the data being transferred.

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  • 12. 

    All interphone audio common lines are connected to ground at a singly point to

    • Eliminate audio frequencies above 16,000 kHz

    • Amplify stray audio frequencies

    • Minimize the stray electromagnetic radiation from being picked up by the system

    • Ensure high-voltage potentials are not detected in the audio circuits

    Correct Answer
    A. Minimize the stray electromagnetic radiation from being picked up by the system
    Explanation
    Connecting all interphone audio common lines to ground at a single point helps to minimize the stray electromagnetic radiation from being picked up by the system. By grounding the common lines, any stray electromagnetic radiation that may be present in the system is effectively absorbed and prevented from interfering with the audio signals. This grounding technique helps to maintain the integrity and quality of the audio signals transmitted through the interphone system.

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  • 13. 

    What is the purpose of VOR?

    • Determine bearing to a stations

    • Indicate distances along the approach

    • Determine left/right guidance

    • Determine up/down guidance

    Correct Answer
    A. Determine bearing to a stations
    Explanation
    The purpose of VOR (VHF Omnidirectional Range) is to determine the bearing or direction to a station. VOR uses radio signals to provide pilots with accurate and reliable navigation information. By using VOR, pilots can determine their position in relation to the VOR station and navigate along a specific radial or course. This helps in planning and executing flights, especially during instrument approaches, where pilots need to accurately track and maintain a specific course to reach their destination.

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  • 14. 

    What secure voice component integrates the KY-58/transmission security (TSEC) processor into existing aircraft installations

    • Z-AHQ adapter

    • KY-58 remote control unit control panel

    • KYK-13 fill device

    • KY-58/TSEC processor

    Correct Answer
    A. Z-AHQ adapter
    Explanation
    The Z-AHQ adapter is the secure voice component that integrates the KY-58/transmission security (TSEC) processor into existing aircraft installations.

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  • 15. 

    The major difference between the U-92A/U plug is the

    • U-94A/U plug has a PTT button

    • U-92A/U jack has a PTT button

    • U-94A/U plug is located on the pilot's throttle grip

    • U-92A/U jack requires an additional wire for the talk switch

    Correct Answer
    A. U-94A/U plug has a PTT button
    Explanation
    The major difference between the U-92A/U and U-94A/U plug is that the U-94A/U plug has a PTT (Push-to-Talk) button. This means that the U-94A/U plug allows the user to easily activate the microphone and transmit their voice by simply pressing the button. On the other hand, the U-92A/U plug does not have a built-in PTT button, which means that an additional wire is required for the talk switch to activate the microphone. Additionally, the location of the U-94A/U plug is on the pilot's throttle grip, while the U-92A/U jack does not specify its location.

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  • 16. 

    On how many channels are the MLS receivers capable of operating?

    • 559

    • 500

    • 669

    • 200

    Correct Answer
    A. 200
    Explanation
    The MLS receivers are capable of operating on 200 channels.

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  • 17. 

    The main reference burst is transmitted when the main lobe of the TACAN surface beacon radiation pattern is due

    • South

    • North

    • West

    • East

    Correct Answer
    A. East
    Explanation
    The main reference burst is transmitted when the main lobe of the TACAN surface beacon radiation pattern is due East.

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  • 18. 

    The AN/ARN-118 is controlled by the area navigation system when the TACAN control box channel selector (X or Y) is set to

    • 10

    • 00

    • 11

    • 01

    Correct Answer
    A. 00
    Explanation
    The correct answer is "00". The AN/ARN-118 is controlled by the area navigation system when the TACAN control box channel selector is set to "00". This indicates that the AN/ARN-118 is integrated with the area navigation system and will receive guidance and navigation information from it. The other options do not specify the correct setting for the TACAN control box channel selector, so they are not the correct answer.

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  • 19. 

    The ELT is designed to survive an impact of up to

    • 50 g's

    • 125 g's

    • 135 g's

    • 100 g's

    Correct Answer
    A. 100 g's
    Explanation
    The ELT (Emergency Locator Transmitter) is designed to withstand an impact of up to 100 g's. This means that it can endure a force equivalent to 100 times the acceleration due to gravity without being damaged. This level of resilience ensures that the ELT will remain functional even in high impact situations, such as during an aircraft crash or other emergencies.

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  • 20. 

    The C-6567 interphone control panel radio transmitter selection switch is a seven position rotary switch that enables the aircrew to

    • Tune each radio system and key the interphone

    • Select the radio transmitter frequencies

    • Select and transmit on each radio system and the interphone

    • Select and monitor the aircraft emergency warning tones

    Correct Answer
    A. Select and transmit on each radio system and the interphone
    Explanation
    The C-6567 interphone control panel radio transmitter selection switch is a seven position rotary switch that allows the aircrew to select and transmit on each radio system and the interphone. This means that the switch enables the aircrew to choose which radio system they want to use and also allows them to transmit their messages through the selected radio system or the interphone. This switch provides flexibility and control over communication options for the aircrew.

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  • 21. 

    When connection the WM-85/U interphone cable to the U-94A/U, what wire color is connected to the PTT button on the U-94A/U?

    • White

    • Yellow

    • Black

    • Green

    Correct Answer
    A. Yellow
    Explanation
    The correct wire color connected to the PTT button on the U-94A/U when connecting the WM-85/U interphone cable is yellow.

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  • 22. 

    The ILS marker beacon carrier frequency is

    • 68.1 MHz

    • 75 kHz

    • 75 MHz

    • 68.1 kHz

    Correct Answer
    A. 75 MHz
    Explanation
    The correct answer is 75 MHz. The Instrument Landing System (ILS) marker beacon carrier frequency is 75 MHz. Marker beacons are used to provide pilots with additional guidance during an approach and landing. They transmit specific signals that indicate the aircraft's position relative to the runway. The carrier frequency of 75 MHz is standardized for marker beacons in aviation.

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  • 23. 

    What happens when the IFF system fails to reply to a mode 4 interrogation?

    • The IFF CAUTION light on the pilot's instrument panel illuminates

    • The TEST light on the IFF control box illuminates

    • The TEST light on the IFF control box does not illuminate

    • The REPLY light on the IFF control box illuminates

    Correct Answer
    A. The IFF CAUTION light on the pilot's instrument panel illuminates
    Explanation
    When the IFF system fails to reply to a mode 4 interrogation, the IFF CAUTION light on the pilot's instrument panel illuminates.

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  • 24. 

    The Air Force satellite communication manpack-type radio is capable of handling

    • Hundreds of voice channels

    • Millions of bits of data per second

    • Television transmissions

    • A single-voice or low-speed data channel

    Correct Answer
    A. A single-voice or low-speed data channel
    Explanation
    The Air Force satellite communication manpack-type radio is capable of handling a single-voice or low-speed data channel. This means that the radio can transmit and receive either a single voice communication or a low-speed data transmission. It is not capable of handling hundreds of voice channels, millions of bits of data per second, or television transmissions.

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  • 25. 

    VOR identification (audible) signals are transmitted

    • At 20 second intervals

    • At specified time intervals

    • At 30 second intervals

    • Continuously

    Correct Answer
    A. Continuously
    Explanation
    VOR identification signals are transmitted continuously. This means that the signals are constantly being broadcasted without any interruptions or breaks. The continuous transmission allows pilots and aircraft navigation systems to receive and interpret the signals accurately and in real-time. It ensures a reliable and constant source of navigation information for pilots to determine their position and navigate effectively.

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  • 26. 

    Which antennas are shared by MLS numbers 1 and 2?

    • 3 and 4

    • 3 and 2

    • 1 and 3

    • 1 and 2

    Correct Answer
    A. 3 and 4
    Explanation
    The antennas that are shared by MLS numbers 1 and 2 are 3 and 4.

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  • 27. 

    To get a FROM flag in view on the HSI when the magnetic bearing to the VOR station is 75 degrees, the selected course should be manually set to

    • 75 degrees

    • 360 degrees

    • 150 degrees

    • 210 degrees

    Correct Answer
    A. 210 degrees
    Explanation
    To get a FROM flag in view on the HSI when the magnetic bearing to the VOR station is 75 degrees, the selected course should be manually set to 210 degrees. This is because the HSI displays the reciprocal of the magnetic bearing, which is 180 degrees opposite. By setting the selected course to 210 degrees, the HSI will display the reciprocal as 30 degrees, indicating a FROM flag.

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  • 28. 

    If the VOR station signal is lost or the receiver malfunctions, the ARN-147 system parks the bearing pointer at the

    • 12 o'clock position

    • 3 o'clock position

    • 9 o'clock position

    • 6 o'clock position

    Correct Answer
    A. 3 o'clock position
    Explanation
    The ARN-147 system is designed to provide navigation guidance using the VOR station signal. In the event of signal loss or receiver malfunction, the system parks the bearing pointer at the 3 o'clock position. This indicates that the pilot should continue on the last known course until the signal is regained or the receiver is fixed. The 3 o'clock position is chosen as it is a distinct and easily recognizable reference point on the instrument panel.

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  • 29. 

    The type 1 Air Force satellite communication terminal is an airborne Single Integrated Operational Plan terminal operating in the frequency range of

    • 225.000-399.975 MHz

    • 108.00-151.975 MHz

    • 3.0-30.0 MHz

    • 30.0-87.975 MHz

    Correct Answer
    A. 225.000-399.975 MHz
    Explanation
    The correct answer is 225.000-399.975 MHz. This frequency range is specified for the type 1 Air Force satellite communication terminal, which is an airborne Single Integrated Operational Plan terminal. This terminal operates within this range to facilitate communication via satellite in the Air Force.

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  • 30. 

    With the C-10356 SATCOM control panel function switch inthe BIT position, tests are performed automatically and, if no-fault condition exists, continuous testing is performed until the control-indicator display shows

    • 66666

    • 88888

    • 33333

    • 55556

    Correct Answer
    A. 66666
    Explanation
    The correct answer is 66666 because when the SATCOM control panel function switch is in the BIT (Built-In Test) position, automatic tests are performed. If there are no faults detected, continuous testing will be performed until the control-indicator display shows the result 66666.

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  • 31. 

    When the ILS marker beacon amber (orange) lamp illuminates, the pilot hears a

    • 3,000 Hz tone

    • 1,000 Hz tone

    • 1,300 Hz tone

    • 400 Hz tone

    Correct Answer
    A. 1,300 Hz tone
    Explanation
    When the ILS marker beacon amber lamp illuminates, the pilot hears a 1,300 Hz tone. This is because the 1,300 Hz tone is associated with the middle marker beacon on the Instrument Landing System (ILS). The ILS uses marker beacons to provide guidance to pilots during instrument approaches. Each beacon is associated with a specific frequency tone, and the 1,300 Hz tone indicates the presence of the middle marker. This helps the pilot to confirm their position during the approach and make necessary adjustments.

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  • 32. 

    What glide slope information is provided to the attitude director indicator when the AN/ARN-127 is oeprating in the ILS mode?

    • Navigation signals

    • Audio signals

    • Left/right deviations

    • Up/down deviations

    Correct Answer
    A. Up/down deviations
    Explanation
    When the AN/ARN-127 is operating in the ILS mode, it provides up/down deviations information to the attitude director indicator. This means that the AN/ARN-127 is responsible for indicating whether the aircraft is above or below the desired glide slope. It does not provide left/right deviations or audio signals, but rather focuses on vertical guidance.

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  • 33. 

    If the horizontal situation indicator bearing pointer indicates 50 degrees during tactical air navigation operation, waht selected couse should be selected to get the FROM arrow

    • 330 degrees

    • 0 degrees

    • 120 degrees

    • 270 degrees

    Correct Answer
    A. 270 degrees
    Explanation
    In tactical air navigation, the horizontal situation indicator bearing pointer indicates the direction to a selected course. To get the FROM arrow, the selected course should be opposite to the bearing pointer. Since the bearing pointer indicates 50 degrees, the opposite direction would be 180 degrees away from it. Therefore, the selected course should be 180 degrees + 90 degrees (to get the FROM arrow) which equals 270 degrees.

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  • 34. 

    The ground radar and identification, friend or foe interrogator transmissions are synchronized so the radar returns can be

    • Used to display altitude information

    • Displayed on the PPI independent of the IFF reply

    • Displayed on the PPI with the IFF reply

    • Displayed on a separate plan position indicator

    Correct Answer
    A. Displayed on the PPI with the IFF reply
    Explanation
    The ground radar and identification, friend or foe interrogator transmissions are synchronized so that the radar returns can be displayed on the PPI (Plan Position Indicator) together with the IFF (Identification Friend or Foe) reply. This means that the altitude information gathered from the radar returns can be displayed alongside the identification information obtained from the IFF reply, providing a comprehensive display of both altitude and identification on the same screen.

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  • 35. 

    What acronym is used for the system developed to include identification, altitude, and cryptographic secure-coded reply from an aircraft?

    • IFF

    • AFSATCOM

    • ATCRBS

    • AIMS

    Correct Answer
    A. AIMS
    Explanation
    AIMS stands for Aircraft Identification, Altitude, and Cryptographic Secure-Coded Reply System. This system is developed to include identification, altitude, and a secure-coded reply from an aircraft. It is used for communication and identification purposes in aviation.

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  • 36. 

    The altitude-encoder provides the IFF transponder pressure altitude encoded in

    • 100-foot increments

    • 500-foot increments

    • 200-foot increments

    • 50-foot increments

    Correct Answer
    A. 100-foot increments
    Explanation
    The altitude-encoder provides the IFF transponder pressure altitude encoded in 100-foot increments. This means that the altitude information transmitted by the IFF transponder is rounded up or down to the nearest 100-foot value. For example, if the actual altitude is 1,250 feet, the encoder will transmit it as 1,200 feet. This allows for a more efficient and standardized way of transmitting altitude information to air traffic control and other aircraft.

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  • 37. 

    What intruder data omission specifically prohibits the TCAS from issuing resolution advisories?

    • Closure rate

    • Altitude

    • Range

    • Bearing

    Correct Answer
    A. Altitude
    Explanation
    The intruder data omission that specifically prohibits the TCAS from issuing resolution advisories is altitude. TCAS (Traffic Collision Avoidance System) relies on accurate altitude information to determine the potential risk of collision between aircraft. If the altitude data is missing or not available, the TCAS system cannot accurately assess the vertical separation between aircraft and therefore cannot issue appropriate resolution advisories to avoid a potential collision.

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  • 38. 

    What KY-58/transmission security system LRY has the primary function of transmitting and receiving secure voice messages?

    • Z-AHQ adapter

    • Remote control unit control panel

    • TSEC secure voice processor

    • KYK-13 fill device

    Correct Answer
    A. TSEC secure voice processor
    Explanation
    The TSEC secure voice processor is the correct answer because it is a component of the KY-58/transmission security system LRY and its primary function is to transmit and receive secure voice messages. The other options, such as the Z-AHQ adapter, remote control unit control panel, and KYK-13 fill device, do not have the same function of transmitting and receiving secure voice messages.

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  • 39. 

    What frequency is used to transmit ILS glide slope information?

    • HF

    • VHF

    • LF

    • UHF

    Correct Answer
    A. UHF
    Explanation
    UHF (Ultra High Frequency) is the correct answer for this question. ILS (Instrument Landing System) is a radio navigation system used by aircraft to guide them during the approach and landing phases of a flight. The glide slope is a component of the ILS that provides vertical guidance to the aircraft, ensuring a safe descent path. UHF frequency range, typically between 300 MHz and 3 GHz, is commonly used for ILS glide slope transmissions.

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  • 40. 

    What is not an MLS output?

    • Azimuth deviation

    • Azimuth warning flag

    • Glide slope correction flag

    • Glide slope deviation

    Correct Answer
    A. Glide slope correction flag
    Explanation
    The question asks for something that is not an MLS output. The options provided are azimuth deviation, azimuth warning flag, glide slope correction flag, and glide slope deviation. Azimuth deviation, azimuth warning flag, and glide slope deviation are all outputs of an MLS system, as they provide information about the deviation from the desired azimuth or glide slope. However, the glide slope correction flag is not an output of an MLS system. Therefore, it is the correct answer to the question.

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  • 41. 

    What is the frequency range of the MLS receivers?

    • 5031-5091 MHz

    • 200-500 MHz

    • 500-669 MHz

    • 669-5031 MHz

    Correct Answer
    A. 5031-5091 MHz
    Explanation
    The frequency range of the MLS receivers is 5031-5091 MHz. This means that the receivers are designed to operate within this specific range of frequencies.

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  • 42. 

    The total number of VOR/ILS channels that can be selected by the AN/ARN-147 control box is

    • 240

    • 200

    • 40

    • 160

    Correct Answer
    A. 200
    Explanation
    The AN/ARN-147 control box is capable of selecting a total of 200 VOR/ILS channels.

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  • 43. 

    Which position of the IFF mode 4 code selection switch is spring loaded?

    • EMER

    • ZERO

    • NORM

    • HOLD

    Correct Answer
    A. HOLD
    Explanation
    The position of the IFF mode 4 code selection switch that is spring loaded is "HOLD". This means that when the switch is released, it will automatically return to the "HOLD" position. This feature ensures that the switch remains in a specific position unless intentionally moved by the operator, preventing accidental changes to the code selection.

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  • 44. 

    Parachute emergency radios transmit on the

    • UHF guard frequency

    • HF guard frequency

    • VHF FM guard frequency

    • VHF AM guard frequency

    Correct Answer
    A. UHF guard frequency
    Explanation
    Parachute emergency radios transmit on the UHF guard frequency. The UHF (Ultra High Frequency) band is commonly used for aviation communication, including emergency situations. The guard frequency is a designated channel for emergency communication, allowing pilots and air traffic controllers to quickly and efficiently communicate in case of an emergency.

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  • 45. 

    What MLS outputs are provided to the pilot's and copilot's HSIs for approach and takeoff?

    • Ground station indications

    • Azimuth signals

    • Steering indications

    • Elevation signals

    Correct Answer
    A. Steering indications
    Explanation
    The correct answer is steering indications. The MLS (Microwave Landing System) provides steering indications to both the pilot and copilot's Horizontal Situation Indicators (HSIs) during approach and takeoff. These indications help the pilots maintain the correct path and alignment with the runway. Steering indications are essential for ensuring safe and accurate navigation during critical phases of flight.

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  • 46. 

    Which MLS landing system component allows for selection of system status?

    • Receiver power on relay

    • Integrated display computer unit

    • Flight director mode selector

    • Data bus coupler

    Correct Answer
    A. Integrated display computer unit
    Explanation
    The integrated display computer unit is the component of the MLS landing system that allows for the selection of system status. It is responsible for displaying information and data related to the MLS system, and it provides the user with the ability to choose different system statuses based on their requirements or preferences.

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  • 47. 

    What is the purpose of a TCAS corrective advisory?

    • Used when a change to the present flight path is necessary for safe flight

    • Used to update resolution advisories

    • Used to update traffic advisories

    • Used to correct a change previously issued in the present flight path

    Correct Answer
    A. Used when a change to the present flight path is necessary for safe flight
    Explanation
    A TCAS corrective advisory is used when a change to the present flight path is necessary for safe flight. This means that if the TCAS system detects a potential conflict with another aircraft, it will provide a corrective advisory to the pilot, suggesting a change in the flight path to avoid the potential collision. The purpose of this advisory is to ensure the safety of the flight by guiding the pilot to take necessary actions to avoid any potential conflicts with other aircraft.

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  • 48. 

    The KY-100 secure voice system is addressed by the crewmembers through the

    • KY-100 mode control panel

    • HAVE QUICK II radio set control

    • AN-ARC-210 switch panel

    • AN/AIC-18 interphone system

    Correct Answer
    A. AN/AIC-18 interphone system
    Explanation
    The correct answer is the AN/AIC-18 interphone system. The KY-100 secure voice system is addressed by the crewmembers through this interphone system. The interphone system allows for communication between the crewmembers and is specifically designed for secure voice communication. It is likely that the KY-100 system is integrated with the interphone system, allowing the crewmembers to access and control it through the interphone system. The other options, the KY-100 mode control panel, HAVE QUICK II radio set control, and AN-ARC-210 switch panel, are not specifically designed for addressing the KY-100 secure voice system.

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  • 49. 

    What is not an operating mode of the PRC-90 emergency radio?

    • Two-way voice communication

    • Satellite communications

    • Morse code

    • Variable audio modulation between 1000 and 300 Hz

    Correct Answer
    A. Satellite communications
    Explanation
    The PRC-90 emergency radio does not have the capability for satellite communications. It is designed for two-way voice communication, Morse code, and variable audio modulation between 1000 and 300 Hz. Satellite communications involve using satellites to relay signals, which is not a feature of the PRC-90 radio.

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