Hi, Werner,

If there are deviations from (as opposed to variations in) workmanship
standards, then to me that is a defect. If it is accepted that they have no
real impact on quality or reliability, I would leave them alone and not
rework them, since reworking an assembly can lead to reliability, if not
quality, issues. I presume though, that anything outside of a standard (a
deviation) does affect quality or reliability somewhere along the line, or
if it doesn't, the standard should be relaxed to take in the "deviation" as
acceptable.

You have a point, though, that Inspection is quite subjective at a certain
point. What one Inspector doesn't like, another may decide is quite alright
- inspecting to fail versus inspecting to pass. More damage can be done to
an assembly by reworking a boarderline case than leaving it alone and
conceding the 'defect'. Therefore I would argue that by reworking such a
defect, quality/reliability would decline.

If there are 'things that an inspector doesn't like', that are not governed
by a standard of some kind, then there is a standard that is either missing
or inadequate in some way. That sort of inspection result can indeed be
very useful as it points out weaknesses in the process system ( or the
Inspector may merely be pedantic - you get them like that sometimes).

Pete Duncan




                    Engelmaier@ao
                    l.com                To:     [log in to unmask], DUNCAN Peter/Asst Prin Engr/ST
                                         Aero/ST Group@ST Domain
                    07/23/01             cc:
                    08:42 PM             Subject:     Re: [TN] Inspection Criteria






Hi Pete,
You correctly state, that: "you can't inspect quality into a job - it
merely
catches some (note some, not all) defects." This is certainly true, but
manual inspections also 'catch' a lot of deviations of workmanship
standards
(or other things that the inspector for some reason does not like) that are

nor really defects and have no real impact on quality or reliability. Now,
after repair or rework of these 'defects'--has the quality/reliability
improved or declined?

Werner Engelmaier

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