[9659]

The adhesive would be specified on an engineering drawing. The drawing would be used to assemble the plane.

You change the adhesive by issuing an Engineering Change Order. This is an engineering approval step.

In this situation, the specific adhesive probably was no longer available. Happens all the time.

[_joel]

They've reverted to the original adhesive, so it must have been available. It says so in the article.