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To see a dim object best at night, a pilot should do what?

Choices

  • ✓ Use off-center viewing, looking slightly to the side of the objectcorrect

    The peripheral rods are more light-sensitive and are used by looking off-center.

  • Stare directly at the object

    Staring directly puts the image on the rod-free center, where it can disappear.

  • Shine a bright white light toward it

    Bright light destroys dark adaptation.

  • Close one eye entirely for the flight

    Closing an eye reduces the field of view without aiding rod vision.

Why

Night vision depends on peripheral rod cells, and the very center of vision has none, so pilots use off-center viewing and allow about 30 minutes to dark-adapt.

FAA source: AIM 8-1 / night visionbrowse the reference library →

This is taught in When Your Senses Lie: Disorientation, Motion Sickness, Ears and Night Vision — study the lessons free, then practice with grading and mastery tracking.

Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.

To see a dim object best at night, a pilot should do what? · PPL Free Ground School