What type of light is used to examine the pad under the viewer kit after filtration?

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Study for the Aviation Maintenance Technician, Second Class (AMT2) Exam. Use flashcards and multiple choice questions, with hints and explanations provided for each question. Prepare for success!

Multiple Choice

What type of light is used to examine the pad under the viewer kit after filtration?

Explanation:
Fluorescent penetrant inspection relies on the dye you apply to glow when excited by ultraviolet light. When you view the pad with the viewer kit after filtration, you’re using ultraviolet illumination to excite the fluorescent dye and the filtration helps block out other light so the glow stands out clearly. This makes cracks or flaws visible as bright indications against a dark background. Infrared light is for heat sensing, visible white light would wash out the fluorescence, and X-ray is for radiographic imaging—none of which provide the same contrast for fluorescent penetrants. Remember to use UV safety precautions, as UV exposure can be harmful.

Fluorescent penetrant inspection relies on the dye you apply to glow when excited by ultraviolet light. When you view the pad with the viewer kit after filtration, you’re using ultraviolet illumination to excite the fluorescent dye and the filtration helps block out other light so the glow stands out clearly. This makes cracks or flaws visible as bright indications against a dark background. Infrared light is for heat sensing, visible white light would wash out the fluorescence, and X-ray is for radiographic imaging—none of which provide the same contrast for fluorescent penetrants. Remember to use UV safety precautions, as UV exposure can be harmful.

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