PEAR Model
PEAR Model
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Description
The mnemonic PEAR is used to recall the four considerations for assessing and mitigating human factors in aviation maintenance:
- People who do the job;
- Environment in which they work;
- Actions they perform; and
- Resources necessary to complete the job.
People
Physical Factors
- Physical Size
- Gender
- Age
- Strength
- Sensory Limitations
Physiological Factors
- Nutritional factors
- Health
- Lifestyle
- Fatigue
- Chemical dependancy
Psychological Factors
- Workload
- Experience
- Knowledge
- Training
- Attitude
- Mental or emotional state
Psychosocial Factors
- Interpersonal conflicts
- Personal loss
- Financial hardships
- Recent divorce
Environment
Physical
- Weather
- Location inside/outside
- Workspace
- Shift
- Lighting
- Sound level
- Safety
Organisational
- Personnel
- Supervision
- Labour-management relations
- Pressures
- Crew structure
- Size of company
- Profitability
- Morale
- Corporate culture
Actions
- Steps to perform task
- Sequence of activity
- Number of people involved
- Communication requirements
- Information control requirements
- Knowledge requirements
- Skill requirements
- Attitude requirements
- Certification requirements
- Inspection requirements
Resources
- Procedures/work cards
- Technical manuals
- Other people
- Test equipment
- Tools
- Computers/software
- Paperwork/signoffs
- Ground handling equipment
- Work stands and lifts
- Fixtures
- Materials
- Task lighting
- Training
- Quality systems
Related Articles
Generic Error-Modelling System (GEMS)
Human Factors Analysis and Classification System (HFACS)
Human Performance Modelling (HPM)
Further Reading
- "A Model to Explain Human Factors in Aviation Maintenance" Dr W B Johnson & Dr M E Maddox, Avionics News, April 2007.
- Advisory Circular (AC)120-92B, Safety Management Systems for Aviation Service Providers, U.S. Federal Aviation Administration, January 8, 2015.
- “Fatigue Risk Management in Aviation Maintenance: Current Best Practices and Potential Future Countermeasures.” by A. Hobbs, K. Avers and J. Hiles. DOT/FAA/AM-11/10, 2011. U.S. Federal Aviation Administration Office of Aerospace Medicine.
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