01-H: Human Factors
Knowledge
K1: Symptoms, recognition, causes, effects, and corrective actions assocaited with aeromedical physiological issues, including
K1a: Hypoxia
- symptoms
- increased sense of well-being
- effects
- causes
- a state of oxygen deficiency in the body
- corrective actions
- using supplement oxygen
- flight crew
- between 12500 MSL cabin pressure altitude and 14000 MSL cabin pressure altitude, supplemental oxygen needs to be used by the flight crew during that flight in excess of 30 minutes at those altitudes
- above 14000 MSL cabin pressure altitude, supplemental oxygen needs to be used by the flight crew during the entire flight time at those altitude
- occupants
- each occupant needs to be provided with supplemental oxygen above 15'000 feet MSL, based on cabin pressure altitude (true altitue)
- flight crew
- using supplement oxygen
K1b: Hyperventilation
- symptoms
- suffocation
- drowsiness
- lightheadedness
- tingling and coolness in the extremities
- effects
- causes
- signficantly decreased carbon dioxide level in the body
- due to increased breathing volume due to
- rapid or extra deep breathing while using oxygen
- stress
- emotional tension, anxiety, or fear
- due to increased breathing volume due to
- succceptibility to carbon monoxide poisoning increases as altitude increases
- signficantly decreased carbon dioxide level in the body
- corrective actions
- breathing into a bag
- slowing the breathing rate
- breathing less deeply
- talking aloud
K1c: Middle ear and sinus problems
- Symptoms
- Effects
- Causes
- Corrective Actions
K1d: Spatial disorientation
- definition
- state of temperary confusion resulting from misleading information being sent to the brain by various sensory organs
- lack of orientation with regard to position, attitude or movement of the aircraft in space
-
https://en.wikipedia.org/wiki/Sensory_illusions_in_aviation
-
Somatogravic/vestibular illusions
- conditions
- particularly dominant in conditions of restricted visbility
- night
- IMC
- continual flight into IMC
- particularly dominant in conditions of restricted visbility
- corrective actions
- Always trust your instruments (airspeed, attitude indicator)
- causes
- types
- head-up illusion
- symptoms
- effects
- linear acceleration is perceived as head-up tilt
- pilot tends to react by pushing forward to correct for the falsely assumed pitch up leading to a unintended dive
- head-up illusion
- conditions
-
causes
- moving the head to quickly (esp. in IMC)
K1e: Motion sickness
- Symptoms
- Effects
- Causes
- Corrective Actions
K1f: Carbon monoxide poisoning
- carbon monoxide
- colorless, odorless, tasteless gas cotntained in exhaust fumes
- symptoms
- light accumulation
- headaches
- blurred vision
- dizziness
- drowsiness
- increased sense of well-being
- large accumulation
- loss of muscle power
- light accumulation
- effects
- reduction of the blood's ability to carry oxygen
- causes
- cracks or leakages in the exhaust
- corrective actions
- turn off cabin heat
- open fresh air vents
- open windows
- using supplemental oxygen
K1g: Stress
- Symptoms
- Effects
- Causes
- Corrective Actions
K1h: Fatigue
- Fatigue is easiest recognized by both types of pilots, equally.
- Symptoms
- Increased discomfort
- with lessened capacity for work
- reduced efficiency of accomplishment
- loss of power or capacity to resopnd to stimulation
- feeling of weariness or tiredness
- Increased discomfort
- Effects
- Causes
- general causes
- lack of sleep
- stressors
- specific causes
- circadian disruptions
- operation in the window of circadian low (2am to 6am)
- over-the-counter medications (e.g., allergy pills) leading to drowsiness
- general causes
- Corrective Actions
K1i: Dehydration and nutrition
-
dehydration in hot summer flying
- symptoms
- dehyrdration
- causes
- cold air contains less water vapor than warm air
- dry air at altitude tends to increase the rate of water loss from the body
- symptoms
-
Symptoms
- Effects
- Causes
- Corrective Actions
K1j: Hypothermia
- Symptoms
- Effects
- Causes
- Corrective Actions
K1k: Optical illusions
-
in haze,
- objects appear to be farther away than they actually are
- the eyes focus to empty field myopia
-
Symptoms
- Effects
- Causes
- Corrective Actions
K1l: Dissolved nitrogen in the bloodstream after scube dives
- Symptoms
- Effects
- Causes
- Corrective Actions
K2: Regulations regarding use of alcohol and drugs
- 8 hours bottle to throttle
- 0.04% (= 0.4 permille) BAC
- convictions for DUI of alcohol or drugs must be reported to the FAA, Civiliation Aivation Security Division
- no later than 60 days after the motor vehicle action
K3: Effects of alcohol, drugs, and over-the-counter medications
- effects of alcohol
- intoxication: diminishing of judgment and decision-making ability
- hangover: ongoing motor and mental response impairment
- prescription analgesics (oxycodone, meperidine, codeine, propoxyphene)almost always negatively affect flying performance
- aviation medical examiners (AME) can provide information wether a medicatino is prohibitive offuel flying
K4: Aeronautical Decision Making (ADM) to include using Crew Resource Management (CRM) or Single-Pilot Resource Management (SRM)
-
ADM components
- Definition
- Systematic approach to the mental process used by pilots to consistently determine the best course of action for a given set of circumstances.
- Single-Pilot Resource Management
- Use of checklists, standard operating procedures, and decision models.
- Priorities: Aviate, Navigate, Communicate.
- Keep your eyes moving.
- Always trust your instruments & keep scanning the instruments.
- maintaining situational awareness, being ahead of the aircraft, thinking ahead
- Crew Resource Management
- Positive transfer of controls
- Pilot flying / Pilot monitoring
- Principles
- Safety first
- recon
- Risk management
- features to reduce the risks associated with each flight
- situational awareness
- problem recognition
- good judgment
- DECIDE model for risk management
- Detect
- Estimate
- Choose
- Identify
- Do
- Evaluate
- features to reduce the risks associated with each flight
- PIOSEE model for decision making:
- Problem
- Information
- Options
- Select
- Execute
- Evaluate
- Definition
-
preventable accidents are caused by human error
- effects of poor flight planning
- ignoreing fuel reserve requirements
Risk
R1: Aeromedical and physiological issues
R2: Hazardous attitudes
- Hazaradous habits
- relying on memory for recurring tasks, thus leading to neglection of checklists
- Hazardous thoughts
- Strategy:
- 1) Label the thought as hazardous
- 2) state the corresponding (learned) antidote
- Strategy:
- Classical hazardous attitudes
- Anti-authority
- Attitude: The rules don't apply to me.
- Antidote: Follow the rules, the are usually right.
- Impulsivity
- Attitude: Do it quickly.
- Antidote: Not so fast, think first.
- Invulnerability:
- Attitude: It can't happen to me.
- Antidote: Recognizing that "it could happen to me".
- Macho:
- Attitude: Let me show you what I can do.
- trying to exhibit "the right stuff" (airforce test pilot) leads to practices that are dangerous, often illegal and may lead to a mishap
- Antidote: Taking chances is foolish.
- Attitude: Let me show you what I can do.
- Resignation
- Attitude: What's the use?
- Antidote: I can make a difference. I am not helpless.
- Anti-authority
R3: Distractions, task prioritization, loss of situational awareness, or disorientation
- see-and-avoid
- pilots bear the responsibility for collision avoidance, esp. in an alert area
- scanning technique:
- sequence of short eye movements
- sectors of 10 degrees
- each sector for 1 second
R4: Confirmation and expectation bias
- e.g., taking of on the wrong runway, or landing at the wrong airport
Skills
S1: Associate the symptoms and effects for at least three of the conditions listed in K1a through K1l with the cause(s) and corrective action(s)
S2: Perform self-aassesment, including fitness for flight and personal minimums, for actual flight or a scenario given by the evaluator
- IMSAFE
- Illness
- Medication
- Stress
- Alcohol
- Fatigue
- Emotion/Eating