AVIT 309 CERTIFICATION EVALUATION
TEST PAPER COMPLETE QUESTIONS AND
SOLUTIONS
●● what are the three primary sources of orientation in aviation
Answer: propriception, vestibular, visual
●● what percentage of inflight orientation does vision provide
Answer: 90%
●● proprioceptive senses allow humans to sense what
Answer: orientation and motion through proprioceptors embedded
throughout the human body
●● vestibular senses allow humans to sense what
Answer: angular acceleration, head position, spatial orientation
●● what two components make up the vestibular apparatus
Answer: otolith organs
semicircular canals
●● what would be the speed of a turn for sub-threshold acceleration
,Answer: less than three degrees per second
●● what are the two main components of human visual systems
Answer: central focal vision
peripheral ambient vision
●● 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 degrees
●● where is the night visual blind spot located on the visual field
Answer: center
●● what are the two technologies used for enhanced vision systems
Answer: EVS, EFVS, SVS, NVGs, FLIR
, ●● what is the recommendation for visual scanning inflight for
instruments versus outside the aircraft during good visibility conditions
Answer: 60* side to side in 10* increments
●● proprioception
Answer: somatosensory
seat of your pants
acceleration/deleraction/somatigravic illusion
●● vestibular systems
Answer: semicircular canals
otolith organs
●● visual systems
Answer: 90% of orientation
peripheral vision
●● semicircular canals
Answer: angular acceleration
roll/pitch/yaw
●● otolith organs
TEST PAPER COMPLETE QUESTIONS AND
SOLUTIONS
●● what are the three primary sources of orientation in aviation
Answer: propriception, vestibular, visual
●● what percentage of inflight orientation does vision provide
Answer: 90%
●● proprioceptive senses allow humans to sense what
Answer: orientation and motion through proprioceptors embedded
throughout the human body
●● vestibular senses allow humans to sense what
Answer: angular acceleration, head position, spatial orientation
●● what two components make up the vestibular apparatus
Answer: otolith organs
semicircular canals
●● what would be the speed of a turn for sub-threshold acceleration
,Answer: less than three degrees per second
●● what are the two main components of human visual systems
Answer: central focal vision
peripheral ambient vision
●● 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 degrees
●● where is the night visual blind spot located on the visual field
Answer: center
●● what are the two technologies used for enhanced vision systems
Answer: EVS, EFVS, SVS, NVGs, FLIR
, ●● what is the recommendation for visual scanning inflight for
instruments versus outside the aircraft during good visibility conditions
Answer: 60* side to side in 10* increments
●● proprioception
Answer: somatosensory
seat of your pants
acceleration/deleraction/somatigravic illusion
●● vestibular systems
Answer: semicircular canals
otolith organs
●● visual systems
Answer: 90% of orientation
peripheral vision
●● semicircular canals
Answer: angular acceleration
roll/pitch/yaw
●● otolith organs
