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Physical Environment
Noise and fumes, illumination, climate and temperature, motion and vibration, complex work environments.
Physical environment — summary notes
FreeMain ideas
- Noise above safe exposure limits causes both hearing damage and short-term distraction that increases error risk during precise tasks.
- Poor illumination directly reduces inspection quality — cracks, corrosion and correct wire colour codes are all missed more often in dim or glare-affected light.
- Extreme climate and temperature (hangar or ramp) reduce manual dexterity and concentration; cold hands are clumsy hands.
- Vibration and motion (e.g. working near a running auxiliary power unit) reduce fine motor control and can mask abnormal sounds that would otherwise be a diagnostic cue.
- A physically complex or cluttered work environment increases the chance of foreign object debris (FOD) and of a dropped tool going unnoticed.
- ⚠ Exam trap: the control for poor detection is to fix the lighting (sufficient, glare-free, correct angle) — not to rely on the inspector's diligence to compensate.
Solved examples
A borescope inspection for hairline cracks is carried out under a single portable floodlight at an awkward angle. What is the human factors risk?
Inadequate, glare-prone illumination reduces the chance of detecting a fine crack — the control is to use task-appropriate lighting (diffuse, sufficient lux, correct angle) rather than relying on inspector diligence to compensate.
Physical environment concept map
FreePhysical Environment
Physical environment quiz
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