Describe in-flight illusions.

Description should include the following concepts:

• Spatial disorientation specifically refers to the lack of orientation regarding the position, attitude, or movement of the airplane in space.
• The body uses three integrated systems to ascertain orientation and movement in space
  • Vestibular system—organs found in the inner ear that sense position by the way we are balanced
  • Somatosensory system—nerves in the skin, muscles, and joints that, along with hearing, sense position based on gravity, feeling, and sound
  • Visual system—eyes, which sense position based on what is seen.

Refer to AIM 8-1-5, Illusions in Flight, for more information.

PLT280

Process/Skill Questions:

• What human systems are involved in ascertaining orientation and movement in space?