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"dents"

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wild.blue(at)verizon.net
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Posted: Tue Apr 27, 2010 10:51 am Post subject: "dents"

Hi Pete--



What you're seeing is a bit of skin compression caused by riveting at

fuselage frames.  Looks pretty typical to me.  You've also got rivet dimples

or countersinks at the frames and stringers and spot welds.  Most CJ's are

riveted, but some had spot welding like yours.  Saves weight and labor but

is prone to intergranular corrosion (see http://en.wikipedia

org/wiki/Intergranular_corrosion) at the welds and shows up as swelling

around the welds, kind of like what you're seeing at the rivet heads, but

much more severe.  I've seen a couple of welded CJ's that were pretty ugly..

  



So, I'd get in there and take a good look and do a little anti-corrosion

proofing.  Doesn't look bent to me, but watch out for the aluminum worm.  



Jerry Painter



Wild Blue Aviation



425-876-0865



JP(at)FlyWBA.com



www.FlyWBA.com

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