AVIT 323-255 ORAL EXAM 3 COMPREHENSIVE
STUDY GUIDE 2026
◉ What percentage of inflight orientation does visual orientation
provide?
Answer: 90%
◉ Proprioceptive senses allow humans to sense what?
Answer: Movement and Body position
◉ Vestibular sense allow humans to sense what?
Answer: Angular accerlation
◉ What two components make up the vestibular apparatus?
Answer: Otolith organs and Semi-Circular Canals
◉ What should be the speed of a turn for sub-threshold
acceleration?
Answer: Less than 3 degrees a second
◉ What are the two main components of human visual systems?
Answer: Peripheral and Central
,◉ What are the three phases of vision?
Answer: Photopic, Scotopic, Mesopic
◉ Where is peak visual acuity located?
Answer: Central Vision, Central 2 degree cone
◉ How large is the human perceptible field of view?
Answer: 120 x 120
◉ Where is the night visual blind spot located on the visual field?
Answer: Central 2 degrees/central vision
◉ What are the 2 technologies used for enhanced visual systems?
Answer: Light Intensification and Infrared
◉ What is the recommendation for visual scanning inflight for
instruments versus outside the aircraft?
Answer: 3/4 outside 1/4 inside
◉ True or false: SDO may rapidly transition from unnoticed to
incapacitating
, Answer: True
◉ SDO typically happens when an aviator cannot visually confirm
orientation with what?
Answer: The horizon
◉ Ture or false: Fatigue may lead to SDO by causing routine tasks or
scans to be skipped
Answer: True
◉ What is the average experience level for pilots involved in SDO
related accidents?
Answer: 1000+ hours, 10 years, very experienced
◉ What compensatory reflexive action typically happens to a pilot's
head in a banking turn?
Answer: Optokinetic Cervical Reflex
◉ Which SDO illusion affects a pilot's ability to focus their eyes after
rolling out of an extended turn?
Answer: Oculogyric illusion
STUDY GUIDE 2026
◉ What percentage of inflight orientation does visual orientation
provide?
Answer: 90%
◉ Proprioceptive senses allow humans to sense what?
Answer: Movement and Body position
◉ Vestibular sense allow humans to sense what?
Answer: Angular accerlation
◉ What two components make up the vestibular apparatus?
Answer: Otolith organs and Semi-Circular Canals
◉ What should be the speed of a turn for sub-threshold
acceleration?
Answer: Less than 3 degrees a second
◉ What are the two main components of human visual systems?
Answer: Peripheral and Central
,◉ What are the three phases of vision?
Answer: Photopic, Scotopic, Mesopic
◉ Where is peak visual acuity located?
Answer: Central Vision, Central 2 degree cone
◉ How large is the human perceptible field of view?
Answer: 120 x 120
◉ Where is the night visual blind spot located on the visual field?
Answer: Central 2 degrees/central vision
◉ What are the 2 technologies used for enhanced visual systems?
Answer: Light Intensification and Infrared
◉ What is the recommendation for visual scanning inflight for
instruments versus outside the aircraft?
Answer: 3/4 outside 1/4 inside
◉ True or false: SDO may rapidly transition from unnoticed to
incapacitating
, Answer: True
◉ SDO typically happens when an aviator cannot visually confirm
orientation with what?
Answer: The horizon
◉ Ture or false: Fatigue may lead to SDO by causing routine tasks or
scans to be skipped
Answer: True
◉ What is the average experience level for pilots involved in SDO
related accidents?
Answer: 1000+ hours, 10 years, very experienced
◉ What compensatory reflexive action typically happens to a pilot's
head in a banking turn?
Answer: Optokinetic Cervical Reflex
◉ Which SDO illusion affects a pilot's ability to focus their eyes after
rolling out of an extended turn?
Answer: Oculogyric illusion
