Human Performance Modelling-PEAR Model COMPILED BY Dr.Purnima Sharma

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