----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
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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