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April 2008

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Subject:
From:
Franklin D Asbell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Franklin D Asbell <[log in to unmask]>
Date:
Wed, 16 Apr 2008 08:06:28 -0500
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Change control in regard to AS 9100 may require following a formal change
control procedure depending upon how the changes are being performed.

Change control the way I've developed (and even audited to) in regards to AS
9100 are this;

Significant changes will be documented and when necessary proven by first
article, process validation, etc.

Significant is determined by each company. For example, you have a profile
for a unique product line that you wish to improve upon, you make whatever
adjustments to the SMT line (temp, dwell, placement, etc) and these are
typically documented within a control plan, quality plan, work instruction,
etc. In this respect, a 'significant' change has not occurred and the more
formal, extensive action eluded to in AS 9100 need not apply.

Should you restructure your entire operation, new equipment type, new
process flow, transition from leaded to lead free, those may be considered
significant. Keep in mind that AS 9100 was written for the fabrication of
Aircraft power plants to simple titanium hydraulic tube manufacturers. Each
company has to apply this as appropriate to their operation.

Franklin

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas McCall
Sent: Wednesday, April 16, 2008 7:51 AM
To: [log in to unmask]
Subject: [TN] AS9100 and SMT/reflow machine program changes

Hi,I have been asked to consider the up-issue of SMT, reflow and stencil 
print programs using an engineering change process with respect to 
controlling changes made and for products being manufactured to AS9100 
specifications.
 
Has anyone had any experience of this practice? What is the general opinion 
of trying to control SMT program issue status (not assembly issue but
SMT/reflow
program issue) using an engineering change.  Is this common practice.
 
When changes are made to the SMT, reflow or stencil print, program there
would 
need to be an EC to approve the change.  I am a bit unsure if this is
workable!! Thanks for the input in advance.Douglas I McCall.
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