Boeing

[NMHG]

Is any one familiar with Boeing requirements?
Can any one explain to me material substitution requirements?

 

[IRstuff]

Seems to me that this is something you should discuss directly with Boeing.

TTFN (ta ta for now)
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[legrand01]

Check this link:
Boeing Approved Process Sources D1-4426 Link

Specifically the "Approved Sources Flow Chart" and "User Instructions & Requirements" links.

Hope that has some of the info you're looking for.