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1st Feb 2004, 21:57

#11 (permalink)

Lu Zuckerman

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Join Date: Sep 2000

Location: The home of Dudley Dooright-Where the lead dog is the only one that gets a change of scenery.

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Your idea is not so far off.

To: cwatters

Some high strength aircraft bolts have a dye inside of the shank. If a crack develops the dye will seep out letting the A&P/LAME know the bolt is in the first stages of total failure.