Correction is not a zero-time step in my FR10 estimate. But the historical mounting-bracket summary links restrained alignment, released failure and final acceptance without showing how the records belong together. I want that link checked before it becomes a fixture-design argument.
Start with the actual checks and identities, because I had to remove a movement calculation when the held and released observations weren't comparable; neat arithmetic had outrun what the records said.
Victor, agreed, though Jo's first problem may be the links between sheets rather than the meaning of a measurement. Jo, what identifier was used to join the summary?
Traveller number. The summary has no year column. The scanned sheets have dates, which I've asked quality to compare before we use the apparent progression.
Do those traveller numbers restart? I have seen numbers which are unique in one folder treated as unique everywhere. Here the dates can answer that before anybody debates why the bracket changed shape.
I'd want the estimator in that conversation too, because once a row looks like one bracket passing through three stages, people can quietly turn its correction time into an allowance for every future bracket, even if nobody ever chose that assumption out loud
The traveller numbers restart each year. Our summary joined a restrained check from one year to a released failure from the next. Quality has separated the records; the apparent single-bracket progression was false.
That does not make the released failure disappear. Sorry, more precisely, it removes the claimed earlier condition of that bracket. Keep the real failed result available for its own investigation.
Kim's estimate point is worth retaining even after this join is fixed, because the missing earlier condition still leaves you without a demonstrated fixture result before correction, however tidy the final acceptance page looks
Yasmin, correction and final acceptance do link to the failed bracket when year and traveller are used together. The earlier restrained check does not. We retained the actual correction entry and removed the invented before-and-after comparison.
Did quality find the failed bracket's own fit-up or location record, Jo? There may still be something useful under its complete identity, even though that first sheet was wrong.
Nora, yes. That is a separate search field, not a reason to presume the bracket used a different fixture. Jo has established the cross-year join, and we should avoid adding an undocumented fixture change to explain it.
Cameron and Nora, no earlier location measurement has been recovered for this bracket. Its traveller identifies the fixture revision, and the archived contact drawing is available. That describes the intended arrangement, not proof of how this particular assembly sat.
Then the fixture drawing can inform the next study without pretending it supplies a missing measurement, which is a useful distinction to keep on the actual summary rather than only in this discussion.
And the cost can still say recorded correction occurred on this identified historical bracket, while leaving future frequency open; the choices aren't zero labour or copy this one job onto every order
The review pack now uses complete traveller identities and flags the removed cross-year link. The estimator retained the linked correction as historical work, without a new-cell frequency. Fixture and quality owners will define the missing stage measurements before we discuss redesign.