Human Factors Flashcards
Discuss some runway and landing
illusions
Narrow Runway: Appears farther away, causing a low approach.
Wide Runway: Appears closer, causing a high approach.
Upsloping Runway: Feels higher, causing a low approach.
Downsloping Runway: Feels lower, causing a high approach.
Featureless Terrain (Black Hole Effect): Lack of visual references causes the illusion of being higher than you are, leading to a lower approach.
Rain or Fog: Reduces visual cues, making the runway appear farther away.
What are the functions of Rods and Cones?
Rods: Sensitive to low light, provide peripheral and night vision, but cannot detect color.
Cones: Function in bright light, detect color, and provide sharp central vision.
How do you visually scan during the day and night?
Day: Use a systematic scan, focusing on small segments of the sky for 1-2 seconds at a time.
Night: Use off-center viewing and scan slowly to allow rods to detect movement in low light. Avoid focusing directly on objects due to rods’ positioning.
Give an example of illusions
Inversion
Coriolis
Elevator
False Horizons
Leans
Autokinesis
Graveyard spin/spiral
Somatogravic
Give an example of a vestibular illusion
The Leans: Occurs when a slow, unnoticed bank is corrected, causing the sensation of banking in the opposite direction. This may lead a pilot to re-enter the original bank to “feel level.”
Give an example of a visual illusion
False Horizon: Occurs when the natural horizon is obscured or a sloping cloud layer creates the appearance of a horizon, leading to misalignment of the aircraft.
Give an example of an illusion that might be more common at night?
Autokinesis: A stationary light may appear to move if stared at for several seconds in darkness, leading to disorientation.
What are some ways you can prepare yourself for night flight?
Conduct a thorough preflight inspection with a flashlight.
Ensure all lights (cockpit, exterior, and flashlights) are operational.
Adapt your eyes to darkness for 30 minutes before flight.
Plan for extra altitude and maintain situational awareness.
What is hypoxia? Types?
Symptoms? Corrective action?
Definition: Oxygen deficiency in the body.
Types: Hypoxic (altitude), Hypemic (blood inability to carry oxygen), Stagnant (poor circulation), Histotoxic (cellular oxygen use impaired, e.g., alcohol).
Symptoms: Confusion, cyanosis, euphoria, rapid breathing, headache.
Corrective Action: Descend to lower altitude and use supplemental oxygen.
What is an ear block? What can you do to prevent getting one in flight?
Definition: Blockage of the Eustachian tube during pressure changes.
Prevention: Yawning, swallowing, or using the Valsalva maneuver during climbs/descents.
What is a sinus block? What are the symptoms? How can it be prevented?
Symptoms: Pain in the sinuses during ascent/descent, pressure around the face.
Prevention: Avoid flying with nasal congestion, and use a decongestant if cleared by an aviation medical examiner.
Is it safe to take OTC medication sand fly? Explain how you would determine this in a scenario.
Not all OTC medications are safe. Check the FAA’s “Do Not Fly” list or consult an AME. Medications causing drowsiness or impairing cognitive function are prohibited. Wait 5x the dosing interval before flying (e.g., wait 10 hours if the dose is every 2 hours).
What is carbon monoxide poisoning? Symptoms? Corrective action?
Definition: Inhalation of CO from exhaust fumes.
Symptoms: Headache, nausea, confusion, cherry-red skin (severe cases).
Corrective Action: Turn off cabin heat, open vents/windows, use supplemental oxygen, land immediately.
Can carbon monoxide poisoning be reversed?
Reversal: Remove from exposure and allow time for the body to expel CO.
What is hyperventilation?
Symptoms? Corrective actions?
Definition: Excessive breathing leading to low CO2 levels in the blood.
Symptoms: Dizziness, lightheadedness, tingling in extremities.
Corrective Action: Slow breathing, breathe into a bag, or talk aloud to regulate airflow.