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Can You Answer These 6 Aircraft Systems Questions?

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  1. 1) You're sitting on the ramp, your altimeter is set to 30.47" Hg, and it reads 1500 feet. You pick up ATIS, and the latest altimeter setting is 29.97". You enter the setting on your altimeter. What elevation does it read now?
    Basinbah

    When you dial the Kollsman window to a lower Hg setting, the altimeter will decrease altitude. Since you're reducing it by 0.5 in Hg, it will decrease 500'.

    When you dial the Kollsman window to a lower Hg setting, the altimeter will decrease altitude. Since you're reducing it by 0.5 in Hg, it will decrease 500'.

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  2. 2) How do magnetos power your airplane's spark plugs?
    Boldmethod

    Each magneto feeds 1 spark plug in each cylinder. If a magneto fails, the cylinder will still have 1 operating spark plug, since each cylinder has 2 spark plugs.

    Each magneto feeds 1 spark plug in each cylinder. If a magneto fails, the cylinder will still have 1 operating spark plug, since each cylinder has 2 spark plugs.

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  3. 3) What does this gear connect to?
    John Tewell / Flickr

    The geared flywheel connects to the starter. When the starter engages, the flywheel spins, and the engine starts turning.

    The geared flywheel connects to the starter. When the starter engages, the flywheel spins, and the engine starts turning.

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  4. 4) How do differential ailerons work?
    Boldmethod

    With differential ailerons, the upward moving aileron deflects a greater distance. Since the downward aileron deflects less, it produces less drag, reducing adverse yaw.

    With differential ailerons, the upward moving aileron deflects a greater distance. Since the downward aileron deflects less, it produces less drag, reducing adverse yaw.

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  5. 5) Why are there ridges on this flight control surface?
    Maurizio Pucci / Flickr

    The ridges increase the strength and rigidity of the control surface.

    The ridges increase the strength and rigidity of the control surface.

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  6. 6) What are these things hanging off the aileron?
    Wikipedia

    These are static wicks, and they help dissipate static electricity from the airplane.

    These are static wicks, and they help dissipate static electricity from the airplane.

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Looks like you understand systems pretty well.

You scored %. Nice work.

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Well, it looks like you're a systems expert.

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Colin Cutler

Colin is a Boldmethod co-founder, pilot and graphic artist. He's been a flight instructor at the University of North Dakota, an airline pilot on the CRJ-200, and has directed development of numerous commercial and military training systems. You can reach him at colin@boldmethod.com.

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