Which bracket failures belong in our FR5 fixture study?

RobinAllen0338 · 30 Jan 2026, 21:49 UTC

Closed
RO
RobinAllen0338
I have kept the individual bracket identities this time, but our FR5 proposal uses only the final inspection results, so the brackets that failed after release and passed after correction look identical to the ones that passed first time; should the fixture study include every route or just the corrected examples?

18 replies

DI
DineshBrown0908
Replying to RobinAllen0338

Include the first-time passes as well. Otherwise the study starts by selecting the failures and cannot tell you how common they were in that batch.

16 points
AD
AdaBrown0912
Replying to DineshBrown0908

Yes, ordinary brackets too. The ugly ones cannot tell the whole story.

2 points
BR
BrunoBrown0887
Replying to RobinAllen0338

Which feature fails after release, Robin? Before we choose a study, what is actually wrong with the bracket?

6 points
TE
Tess_Bailey
Replying to DineshBrown0908

Use all routes for the batch count. A smaller identified sample can support detailed fixture work, but keep its selection explicit. Those are different amounts of work for whoever has to collect the observations.

18 points
RO
RobinAllen0338
Replying to Tess_Bailey

Bruno, hole spacing outside requirement after release, passing after correction. Tess, we have identities and dispositions for the whole batch already; the missing work is observing fit-up and the fixture contacts on current parts.

17 points
AN
AnikaBell0682
Replying to RobinAllen0338

And include the correction person's time, unless you want that job to disappear from the estimate again.

8 points
ST
StephanieBailey
Replying to RobinAllen0338

The incoming fit-up check needs to name the features and how the part is supported. A note saying it looked aligned in the fixture will not give the designer a useful before-reading.

18 points
JE
JessBlair
Replying to RobinAllen0338

Were the released measurements taken with the same inspection support before and after correction?

13 points
LI
LiamBaker0490
Replying to Tess_Bailey

I would ask the process specialist to choose the sample, not just whoever has a free morning. They may need the less obvious cases too.

20 points
AD
AdaBrown0912
Replying to LiamBaker0490

Liam, with quality involved. The person choosing samples needs to know what actually passed.

9 points
RO
RobinAllen0338
Replying to JessBlair

Jess, same inspection support and revision H for both released checks. Anika, correction remains in our cost sheet. Stephanie, the incoming check is defined separately; we are not copying the final values into it.

17 points
YA
YasminBrown0876
Replying to RobinAllen0338

Robin, could you start with the people already doing that correction, then let process and quality choose the comparison from their work? They may know which awkward fit-up never makes the final sheet.

18 points
TE
Tess_Bailey
Replying to YasminBrown0876

That is useful input, Yasmin, but I would not let recollection select the entire sample. The unnoticed first-time passes still need a route into the study. Otherwise the spreadsheet improves while the selection bias stays put.

1 points
DI
DineshBrown0908
Replying to RobinAllen0338

Robin, have you reconciled how many passed first time, how many needed correction and how many remain rejected? That can be done from the identities you already have.

13 points
RO
RobinAllen0338
Replying to DineshBrown0908

Not yet. I have the rows, but some bracket identities occur twice because of the second inspection. I will count the parts through their routes rather than total the pass rows.

2 points
YA
YasminBrown0876
Replying to Tess_Bailey

Tess, fair point. I meant include their observations, not let the best-remembered disasters become the whole sample.

16 points
RO
RobinAllen0338
Replying to DineshBrown0908

Count reconciled with quality: eighteen first-time passes, five corrected passes, one rejected bracket, twenty-four parts. Process and quality have chosen the current comparison using that route breakdown, including ordinary passes. Observation still to do.

2 points
JE
JessBlair
Replying to RobinAllen0338

Thanks for answering the support question. Will the correction technician be available during that observation, or are their explanations still coming second hand?

6 points

Discussion closed

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