Type training · Boeing 757 B2 · ATA 23

Boeing 757 B2: VHF, HF, SELCAL and ARINC 429 (ATA 23)Type training questions & answers

VHF and HF radios, antenna couplers, SELCAL, ACARS, the ELT and ARINC 429 data words.

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Sample VHF, HF, SELCAL and ARINC 429 questions with answers

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

  1. 1.What frequency range does the VHF communication system cover?

    • A.2.000–29.999 MHz
    • B.108.000–117.950 MHz
    • C.118.000–136.975 MHz
    Show answer and explanation

    Correct answer: C. 118.000–136.975 MHz

    The transceivers support 25 kHz or 8.33 kHz channel spacing and give 25 W output.

  2. 2.How many VHF communication systems are installed?

    • A.Three
    • B.Two
    • C.One
    Show answer and explanation

    Correct answer: A. Three

    Left, center and right systems each have a radio communication panel, a transceiver and an antenna.

  3. 3.Which VHF transceiver is used by ACARS for data?

    • A.Center
    • B.Left
    • C.Right
    Show answer and explanation

    Correct answer: A. Center

    ACARS sends autotune data to port A of the center transceiver, with data mode select and keyline discretes.

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Part of the Boeing 757 B2 type course

One chapter of the Boeing 757 B2 type course question bank, for the 757-200 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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