On 16 Jan 2005 12:03:42 -0800, wrote:


ChrisH wrote:
My A&P has dignosed this condition on my 1964 (Piper)PA28-140. Has
anyone dealt with this? Can the wings be repaired or rebuilt? Is
there
a good source for spare wings? I'm in North Carolina.
Thanks,

Chris Hight

N6414W
JQF

Their has been discussion about this on the Cardinal owner's group.
Apparently intergranular corrosion is actually caused by improper heat
treating of the part, which leaves it vulnerable to the corrosion
causing elements of moisture, etc. As has been pointed out, it is very
bad stuff as you cannot remove the corrosion and treat it if you catch
it early enough, as you can with Galvanic corrosion. The offending
parts must be replaced.

Correct, it is in the manufacturing process.