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Sorry about that. It sounded like you were the culprit recommending the offending paint job. Larry ----- Original Message ----- From: "James Duffy" <[EMAIL PROTECTED]> To: "Larry Wilkins" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[email protected]> Sent: Monday, March 25, 2002 1:16 PM Subject: Re: [COUPERS] [COUPERS-TECH] Can corrosion be fixed? > What does that remark mean? What I am saying is beware! I have seen quite a few > people buy the new paint jobs to find later what they were covering with it. I > have over 40 years working on aircraft military and civilian and yet to see > something stop corrrosion it only slows it down and hides it. Only total removal > of the corrosion will eliminate it! > > Larry Wilkins wrote: > > > Nasty attitude that! Paint will somewhat cover it, but if it isn't removed, > > it will continue to corrode away under that pretty covering. Better to see > > it and know it's there than try and cover it until it becomes dangerous. > > > > Larry > > ----- Original Message ----- > > From: "James Duffy" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Cc: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[email protected]> > > Sent: Sunday, March 24, 2002 11:28 PM > > Subject: Re: [COUPERS] [COUPERS-TECH] Can corrosion be fixed? > > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any > > advice in this forum.]---- > > > > > > Remember one thing, Paint will cover a multitude of sins! Jim N87349 > > > > > > jan zanutto wrote: > > > > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following > > any advice in this forum.]---- > > > > > > > > Gary, > > > > > > > > corrosion happens to all airplanes, big and small, in one form or > > > > another. The first thing you see is whats called the corrosion > > > > by-products. Either the darkish surface or the whitish dusty appearance. > > > > Discoloration of the material happens first. Then, as the material > > > > (aluminum) continues to decompose it begins to revert back to it's basic > > > > elements and oxides. Aluminum starts to turn into a white powder. > > > > Underneath the white powder you will see that you have a loss of > > > > material, and a loss of skin thickness. Once the old paint and > > > > by-products are removed by either chemical or mechanical means and you > > > > are left with the bare alum you must then inspect to see how deep the > > > > corrosion (pitting at that point) went. The FAA has published an entire > > > > advisory circular on corrosion control and treatment. Also AC 43.13 also > > > > covers this, and it allows a certain loss of material and still is > > > > considered structurally sound. The remaining structure must then be > > > > etched, treated and painted to prevent further loss or corrosion. > > > > > > > > You just have to look and see if it looks like there is material loss. > > > > You can see it even through epoxy primer if you look long and hard > > > > enough, using a good light. > > > > > > > > Jan Z > > > > Fresno CA > > > > (with the 415G for sale) > > > > > > > > > > > > > > > ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Sid.bAhN69 Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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