Type training · Boeing 757 B1.1 · ATA 35, 38

Boeing 757 B1.1: Oxygen, Water and Waste (ATA 35, 38)Type training questions & answers

Crew and passenger oxygen, the potable water system and the lavatory waste systems.

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Sample Oxygen, Water and Waste questions with answers

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

  1. 1.Where is the flight crew oxygen cylinder?

    • A.Behind the captain's seat
    • B.Forward cargo compartment
    • C.In the main equipment center
    Show answer and explanation

    Correct answer: B. Forward cargo compartment

    The cylinder is on the right side of the forward cargo compartment, aft of the access door. The remote fill panel is just below it.

  2. 2.To what pressure does the crew oxygen regulator reduce cylinder pressure?

    • A.About 70 psi
    • B.About 450 psi
    • C.About 1,850 psi
    Show answer and explanation

    Correct answer: A. About 70 psi

    The regulator at the cylinder reduces about 1,850 psi to 70 psi in the supply line. Its relief valve opens at 120 psi.

  3. 3.What does a missing green disc on the fuselage below the forward cargo door indicate?

    • A.The cylinder has discharged overboard
    • B.The cylinder needs servicing soon
    • C.The passenger oxygen masks have deployed
    Show answer and explanation

    Correct answer: A. The cylinder has discharged overboard

    An overpressure (2,500–2,750 psi) breaks the frangible disc. The oxygen goes overboard and blows out the green discharge indicator.

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Part of the Boeing 757 B1.1 type course

One chapter of the Boeing 757 B1.1 type course question bank, for the 757-200 with Rolls-Royce RB211-535E4 engines, 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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