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Safari Helicopter Construction
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Date:  5-23-2007
Number of Hours:  2.00
Manual Reference:  
Brief Description:  Checking Valve Cover Welds for Leaks

After welding up the drain tubes in the valve covers, I decided to check the welds for pin holes. I applied fluorescent penetrant to the inside of the cover and after allowing time for the liquid to penetrate, checked the other side with a blacklight. One of the six welds leaked through and had to be repaired. I'm glad I found the pin hole before the covers were installed.
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Zyglo applied  to weld

Zyglo applied to weld

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