Type training · Airbus A320 family B2 · ATA 23

Airbus A320 B2: Cabin Intercommunication Data System (ATA 23)Type training questions & answers

CIDS directors and DEUs, power supply logic, PA and interphone priorities, passenger calls, signs and EVAC.

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Sample Cabin Intercommunication Data System questions with answers

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

  1. 1.How many CIDS directors does the A320 have, and where are they?

    • A.One, behind the forward attendant panel
    • B.Three, one per cabin zone
    • C.Two, in the avionics compartment
    Show answer and explanation

    Correct answer: C. Two, in the avionics compartment

    Two identical directors (DIRs) sit in the avionics compartment. DIR 1 is normally active and DIR 2 is in hot standby.

  2. 2.What does the CIDS director OBRM contain?

    • A.The cabin pressure schedule
    • B.Stored passenger announcements
    • C.Part of the director software
    Show answer and explanation

    Correct answer: C. Part of the director software

    The On Board Replaceable Module holds part of the software, so exchanging it can expand the system or update it.

  3. 3.Where are the CIDS type A DEUs installed?

    • A.In the forward avionics compartment
    • B.In the cabin ceiling above the windows
    • C.Near each exit door in the centre ceiling
    Show answer and explanation

    Correct answer: B. In the cabin ceiling above the windows

    Type A DEUs are above the windows. Type B DEUs are near the exit doors in the centre ceiling.

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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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