When inspecting an airframe structure for small cracks, to avoid a crack being missed you should. Hold the vision stationary for several seconds on each area to allow the eye to focus correctly. Not use a mirror as mirrors absorb and refract light and may obscure a crack. Constantly move the eye across and around the area of interest to avoid the crack falling into the eye's natural blind spot. .
When a person moves from a poorly lit area to a well lit area, what is the minimum time they should allow for the eyes to adapt?. 7 seconds. 7 minutes 30 seconds.
Itemized checklists should be dealt with. In any order, provided all steps are completed. Item by item, in order, to cover every step diligently. As memorized.
The main disadvantage of carrying out critical inspections under very bright artificial light is. Glare. Shadows Filtered light.
When carrying out a visual inspection, an engineer is likely to make a parallax error when. Inspecting a component using a 5x or 10x magnifying glass. Nothing. Using precision measuring instruments such as a vernier gauge or AVO meter.
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