Understanding Aircraft Datums and Arms
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Questions and Answers

What is the unit of measurement for the arm's distance?

  • Centimeters
  • Inches (correct)
  • Feet
  • Meters

    • What does a positive sign indicate for an item's location?

  • The item is located aft of the datum (correct)
  • The item is located forward of the datum
  • The item is located at the center of the aircraft
  • The item is located exactly on the datum

    • What would be the arm's value for an item located exactly at the datum?

  • A very large negative number
  • A very large positive number
  • Zero (correct)
  • One

    • What would be the result of locating the datum at the most forward location on an aircraft?

    <p>All arms would be positive numbers</p> Signup and view all the answers

    In Figure 16-1, what would be the sign of the arm for an item located forward of the wing leading edge?

    <p>Negative</p> Signup and view all the answers

    What determines whether an arm is positive or negative?

    <p>The location of the item relative to the datum</p> Signup and view all the answers

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