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This info applies to Alon Aircoupes. I don't know if the same issue exists on other models of the Ercoupe/Aircoupe. At the front side of the main spar center section, right where the center section meets the fuselage skin, there is a piece of foam rubber (sponge material) glued directly onto the front side of the center section spar web. The foam is glued in place with contact cement. The spar web is bare aluminum in this location. There is no paint or primer between the foam and the aluminum. I believe the purpose of the foam is to prevent air from leaking in between the fuselage/wing junction. When this foam gets wet, it holds the moisture in contact with the spar web. Upon removal of this piece of foam, and scraping off the contact cement, I found some light surface corrosion starting to form on the spar web. In order to inspect this area it is necessary to remove the foam piece. I suggest that this piece of foam be removed, the area thoroughly cleaned, and coated with epoxy primer before the foam is glued back in place. This is a location that may have never been inspected on some Alons, since it is hard to get at, and the foam must be removed in order to see the problem. The guy who told me about this problem said that he saw an Alon with the spar web badly corroded in this location. If anyone is interested in a photo of this area, let me know and I will e-mail one to you. Good Flying, Wayne DelRossi Alon N5618F ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT 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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