Type training · Airbus A320 family B2 · ATA 31

Airbus A320 B2: EIS, ECAM and EFIS Architecture (ATA 31)Type training questions & answers

DMCs, FWCs and SDACs, data buses, display reconfiguration and failure cases.

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Sample EIS, ECAM and EFIS Architecture questions with answers

Three questions from the free preview. Think of your answer first, then open the explanation.

  1. 1.How many Display Management Computers does the A320 have?

    • A.Six, one for each display unit
    • B.Three, all interchangeable
    • C.Two, one for each pilot side
    Show answer and explanation

    Correct answer: B. Three, all interchangeable

    DMC 1 and 2 drive the displays and DMC 3 is a spare that can be switched in for either.

  2. 2.How many display units can one A320 DMC drive at the same time?

    • A.Two: PFD and ND only
    • B.Six: all the cockpit displays
    • C.Three: PFD, ND and one ECAM
    Show answer and explanation

    Correct answer: C. Three: PFD, ND and one ECAM

    Each DMC has PFD, ND and ECAM processing channels, so it drives two EFIS displays and one ECAM display.

  3. 3.On the classic A320, how does a DMC send display data to its display units?

    • A.Over ARINC 629 high-speed data buses
    • B.Over analog video coaxial cables
    • C.Over a master serial link (DSDL)
    Show answer and explanation

    Correct answer: C. Over a master serial link (DSDL)

    A master DSDL carries the drawing data. A feedback DSDL returns acknowledgments, failures and critical parameters.

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Part of the Airbus A320 family B2 type course

One chapter of the Airbus A320 family B2 type course question bank, for the A318–A321 avionics, written in our own words for revision. Your type course and the aircraft maintenance manual stay the authority: limits and procedures can differ between airframes and operators.

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