Aircraft Systems: ATSU and DCDU
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Questions and Answers

What is the primary function of the ATSU?

  • To manage the display of data on the DCDU (correct)
  • To load software through the Multipurpose Disk Drive Unit (MDDU)
  • To control the transmission of messages to ATC ground centre
  • To initialise the BITE function

    • What happens when the message file reaches its capacity?

  • The amber message 'file full' is displayed (correct)
  • The message file is reset
  • The system crashes
  • The oldest message is deleted

    • What is the purpose of the ARINC 429 high-speed bus?

  • To control the flight crew's response to messages
  • To initialise the BITE function
  • To transmit display information from the ATSU to the DCDU (correct)
  • To load software through the Multipurpose Disk Drive Unit (MDDU)

    • What type of messages are automatically displayed on the DCDU?

    <p>Urgent or distress messages</p> Signup and view all the answers

    What is the function of the DCDU?

    <p>To provide the flight crew with display capabilities and control means</p> Signup and view all the answers

    How many messages can be filed in the DCDU message file?

    <p>Up to 29 messages</p> Signup and view all the answers

    What information does the ATSU send to the CMCs?

    <p>The part number and the software number of each component</p> Signup and view all the answers

    What is the primary function of the FMGEC in relation to the ATSU?

    <p>To get flight-management information acquired by the ATSU</p> Signup and view all the answers

    What is the role of the ATSU in relation to Airline Operational Control (AOC) remote application?

    <p>It acts as a router to exchange data messages</p> Signup and view all the answers

    What is the primary function of the MCDUs in the ATIMS system?

    <p>To provide aircrew access to specific Air Traffic Control (ATC) system pages</p> Signup and view all the answers

    What is the purpose of the ATSU acquiring the Aircraft Registration Number (ARN) and Flight Number data?

    <p>For the air/ground communication functions</p> Signup and view all the answers

    What is the relationship between the FMGEC and the ATSU?

    <p>The FMGEC interfaces with the ATSU to get flight-management information</p> Signup and view all the answers

    What does the ATSU acquire to determine the printer's operational status?

    <p>Printer status</p> Signup and view all the answers

    What type of messages does the cabin terminal interface support?

    <p>ARINC 619 messages</p> Signup and view all the answers

    What is the concept that covers the main evolutions of the way the airspace will be used?

    <p>Communication Navigation and Surveillance</p> Signup and view all the answers

    What is the purpose of the data loader selector switch on the ATSU position?

    <p>To select the data loading interface</p> Signup and view all the answers

    What is the function of the LGCIU in relation to the ATSU?

    <p>To provide landing gear control information</p> Signup and view all the answers

    What is the role of the ATSU in relation to the cabin terminals?

    <p>It acts as a router for ARINC 619 messages</p> Signup and view all the answers

    What data does ADSB broadcast every half a second?

    <p>Identification, position, altitude, velocity, and other data</p> Signup and view all the answers

    What is the progression of FANS development stages?

    <p>Pre-FANS, FANS A, FANS B</p> Signup and view all the answers

    What is the main function of the Aircraft Information Network System (AINS)?

    <p>To provide flight crew applications and maintenance applications</p> Signup and view all the answers

    What is the difference between FANS A and FANS B?

    <p>FANS B has improved ground network and TCAS, FANS A does not</p> Signup and view all the answers

    What is the purpose of the Network Information System?

    <p>To provide passenger information and maintenance applications</p> Signup and view all the answers

    What is the function of Cabin Information Network System (CINS)?

    <p>To provide passenger information</p> Signup and view all the answers

    What is the primary purpose of the information transmitted from the aircraft?

    <p>To plan aircraft turnarounds and logistics support</p> Signup and view all the answers

    What system does ACARS utilise to transmit data between the aircraft and operators AOC facilities?

    <p>VHF radio system</p> Signup and view all the answers

    What is the primary function of the Air Traffic Services Unit (ATSU)?

    <p>To upload AOC applications into the system</p> Signup and view all the answers

    What is the function of the Remote AOC application?

    <p>To route data to and from AOC peripherals</p> Signup and view all the answers

    What is the purpose of the Hosted AOC application?

    <p>To upload AOC applications into the system</p> Signup and view all the answers

    What is the primary function of the AOC peripherals?

    <p>To receive ground messages and route them to the right AOC peripheral</p> Signup and view all the answers

    Study Notes

    Air Traffic Service Unit (ATSU)

    • ATSU case has minimal software and enables uploading of software through Multipurpose Disk Drive Unit (MDDU) or portable data loader
    • Processes and organizes data in screen pages to be displayed on Data Control and Display Unit (DCDU)

    Data Control and Display Unit (DCDU)

    • Displays information received from ATC ground centre and allows sending of answers and messages to the ground centre
    • Dedicated to ATC applications
    • Provides display capabilities and control means
    • Up to 29 messages can be filed in chronological order, with oldest message being number 1
    • If message file reaches capacity, amber message "file full" is displayed in information area

    ATSU/DCDU Interface

    • Performs following functions: Display Recall, Flight crew response, Initialisation, BITE
    • BITE consists of DCDU test, error report, DCDU status report, and LRU identification

    Air Traffic and Information Management System Architecture

    • ACARS utilizes aircraft VHF radio system to transmit data between aircraft and operators AOC facilities
    • Information transmitted from aircraft is used to plan aircraft turnarounds and can be stored in airline computer systems for logistics support

    Airline Operational Control (AOC) Applications

    • Standard AOC applications are datalink applications used by airline for maintenance, flight operations, and administrative purposes
    • Uploaded into ATSU by means of software disks, composed to meet airline requirements
    • Two types of AOC applications: Remote AOC application and Hosted AOC application

    Automatic Dependant Surveillance Broadcast (ADSB)

    • Provides identification, position, altitude, velocity, and other data every half a second using same transponder as TCAS
    • Broadcasts information to ground stations

    FANS Development

    • Three stages of FANS development: Pre-FANS, FANS A, and FANS B
    • FANS A includes ATC functions, FANS B includes improved ground network and TCAS

    Network Information Systems

    • Composed of two systems: Aircraft Information Network System (AINS) for maintenance and operations, and Cabin Information Network System (CINS) for passenger information
    • AINS gives access to flight crew applications and maintenance applications
    • Sends part number and software number of each component of ATIMS system to CMCs
    • Acquires A/C configuration parameters from CMCs
    • Acquires Aircraft Registration Number (ARN) and Flight Number data

    Central Maintenance Computer (CMC)

    • Acquires data from AINS
    • Used to plan maintenance and logistics support

    Flight Management Guidance Envelope Computer (FMGEC)/ATIMS Interface

    • FMGEC interfaces with ATSU to acquire flight-management information
    • Exchanges data messages for Airline Operational Control (AOC) remote application
    • ATSU acts as a router

    Multi-Purpose Control and Display Units (MCDU)

    • Used for maintenance and application purposes in addition to DCDUs
    • Provides aircrew access to specific Air Traffic Control (ATC) system pages
    • Loading can be done through portable data loader or MDDU with data loader selector switch on ATSU position

    Printer

    • ATSU acquires printer status to determine whether it is operational or not

    Landing Gear

    • ATSU receives information from Landing Gear Control Interface Unit (LGCIU) to determine whether aircraft is on the ground or in flight

    Cabin Terminals

    • Consist of Passenger Flight Information System (PFIS) and Cabin Passenger Management System (CPMS)
    • Interface supports exchange of ARINC 619 messages hosted in cabin terminals
    • Cabin terminals use ATSU as an ACARS router

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    Related Documents

    Aeroplane Information Systems PDF

    Description

    This quiz covers the Air Traffic Service Unit (ATSU) and Data Control and Display Unit (DCDU) in aircraft systems. Learn about the ATSU's role in managing data and the DCDU's display of information.

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