Pear Model (Human Factor)

[Ref AVIA4004 Lecture Notes]

The mnemonic PEAR is used to recall the four (4) considerations for assessing and mitigating human factors in aviation :

  • People who do the job (Physical, Physiological factors)
  • Environment in which they work (Psychological, Psychosocial, Physical, Organizational factors)
  • Actions they perform
  • Resources necessary to complete the job


People

Physical Factors

  1. Physical Size
  2. Gender
  3. Age
  4. Strength
  5. Sensory Limitations

Physiological Factors

  1. Nutritional factors
  2. Health
  3. Lifestyle
  4. Fatigue
  5. Chemical dependency

Environment

Psychological Factors

  1. Workload
  2. Experience
  3. Knowledge
  4. Training
  5. Attitude
  6. Mental or emotional state

Psychosocial Factors

  1. Interpersonal conflicts
  2. Personal loss
  3. Financial hardships
  4. Recent divorce

Physical

  1. Weather
  2. Location inside/outside
  3. Workspace
  4. Shift
  5. Lighting
  6. Sound level
  7. Safety

Organizational

  1. Personnel
  2. Supervision
  3. Labor-management relations
  4. Pressures
  5. Crew structure
  6. Size of company
  7. Profitability
  8. Morale
  9. Corporate culture

Actions

  1. Steps to perform in a task
  2. Sequence of activity
  3. Number of people involved
  4. Communication requirements
  5. Information control requirements
  6. Knowledge requirements
  7. Skill requirements
  8. Attitude requirements
  9. Certification requirements
  10. Inspection requirements

Resources

  1. Procedures/work cards
  2. Technical manuals
  3. Other people
  4. Test equipment
  5. Tools
  6. Computers/software
  7. Paperwork/signoffs
  8. Ground handling equipment
  9. Work stands and lifts
  10. Fixtures
  11. Materials
  12. Task lighting
  13. Training
  14. Quality systems

Leave a Reply

Your email address will not be published. Required fields are marked *