Keystone 
Industries
Aerospace supply chain
Aerospace work is assessed on evidence: approved revisions, authorised release, written concessions and retained records.
What is different about running one of these
- 01
Nothing may run to an unapproved revision, and proving that matters as much as doing it.
- 02
Concessions and deviations require a formal written record, retained.
- 03
Material provenance has to answer in both directions, for years.
- 04
Records are expected to be tamper-evident, with corrections made as auditable adjustments rather than edits.
Where it usually goes wrong
Revision control that relies on discipline
The quality manager and the issuing engineer know the approved revision. Whether the job on the floor runs that revision depends on whoever raised it.
Concessions agreed and then documented
People agree use-as-is in a conversation so the delivery can go, and the paperwork follows. Sometimes.
Evidence assembled at audit time
A surveillance audit lands and a fortnight disappears into assembling records that doing the work should already have produced.
What helps, and why here in particular
- 01
Quality, concessions and traceability
Keystone refuses use-as-is without a written concession, and links the material behind a non-conformance to everything else it touched. - 02
Append-only audit history
History that holds up in an audit. Corrections add records; they do not overwrite them. - 03
Works orders with routing snapshots
A job records the bill and routing it was raised against, so the revision it ran to stays on record.
Straight answer
What we do not do yet
Four things AS9100 expects are not built yet: authorised release of a lot, quarantine as a real stock state, first article inspection triggers on a revision or process change, and engineering change notices on a routing. If you are certifying this year, ask where each one stands before you decide anything. What does exist today is full heat and cast traceability onto the certificate, written concessions before anything ships use-as-is, and a history that cannot be rewritten.
Next step
See it against aerospace supply chain work
A walkthrough starts with your orders, your production flow and your material problems. We follow one of your jobs through the system rather than presenting a feature list.