Corrosion Concerns on Aluminum for Aircraft Structure

Aluminum Usage in Boeing

I found this article pretty interesting:

Boeing designs airplanes to resist corrosion through selection of the proper materials and finishes and the use of drainage, sealants, and corrosion inhibitors. These designs are based on knowledge of what causes corrosion and the types of corrosion that occur in airplane structure. In addition, following a corrosion control program is necessary throughout the service life of the airplane. These activities are essential for controlling corrosion to a predictable, manageable level that does not degrade structure or jeopardize the ability of the airplane to carry its intended design loads.

Full article is here: http://www.boeing.com/commercial/aeromagazine/aero_07/corrosn.html