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Engineering change & document control for manufacturers

Know which drawing is current.
Prove it to your auditor.

Traceline replaces shared drives and email chains with one place to request a change, route the resulting drawing through approval, and keep a record — change justification, e-signed approvals, redlines, every revision in between — your AS9100 auditor can actually follow.

Traceline dashboard showing a released engineering drawing with its revision status and approval history
The problem

Every shop has a version of this

"Which one's current?"

Drawings scattered across shared drives, email threads, and someone's desktop. No single place that says which revision is actually released.

"Who approved this?"

Revisions get emailed around and printed with no enforced sign-off — and no record of who released what, or when.

"Is this the old one?"

Superseded and obsolete drawings keep circulating on the shop floor with nothing on the page to flag that they've been replaced.

AS9100 · §8.5.2 Document Control & §8.5.6 Control of Changes

Built around the clauses, not retrofitted to them

§8.5.2 and §8.5.6 spell out exactly what document control and change control have to do. Traceline's workflow maps to both directly — not as a marketing claim, but as the actual mechanics of the app.

§8.5.2

Unique identification & revision status

Every drawing carries a part number and revision letter. Status — draft, pending approval, released, superseded, obsolete — is always shown, never inferred from a filename.

§8.5.2

Approval prior to release

A revision can't become "released" without passing Submit → Approve. Enforced at the database level: only one released revision can exist per document, ever.

§8.5.2

Authenticated approval, not just a button click

Approving or rejecting a release requires re-entering your password and typing your full name as an attestation — recorded as its own immutable signature record, tied to the exact audit entry it authorizes.

§8.5.2

Current version available at the point of use

One search finds the released drawing — full-text, across part numbers, descriptions, and the text inside the PDF itself. Never a stale copy by accident.

§8.5.2

Immutable audit trail & retention of records

Every state change is written to an append-only audit log. Nothing can be edited or deleted after the fact — not even by an admin account. The database itself refuses the write.

§8.5.6

Review and authorization of changes before they happen

Engineering Change Notices carry their own justification and impact assessment, and require review and approval before an engineer even starts the revision — not a rubber stamp after the fact. Every ECN links to the exact revision that implements it.

§8.5.2

Control of obsolete documents

Superseded and obsolete drawings are watermarked the moment they're downloaded — "SUPERSEDED" or "OBSOLETE — DO NOT USE" — so a printed copy can't be mistaken for current.

Traceline is built to support the document- and change-control practices AS9100 §8.5.2 and §8.5.6 require. Certification applies to your organization's quality management system as a whole, following an accredited third-party audit — Traceline is the tool, not the certificate.

How it works

The same four steps, every time

01

Upload

Attach the PDF and describe what changed. It lands as a draft only you and reviewers can see.

02

Submit for approval

One click sends it to an Approver. Nothing reaches the shop floor without it.

03

Approve & release

The Approver reviews and releases it. The previous revision is automatically marked superseded.

04

Superseded, automatically

Anyone downloading the old revision from then on gets it clearly watermarked.

Visual diff between two drawing revisions with the changes highlighted
What's actually different

Visual diff between revisions

Traceline renders both revisions and highlights exactly what moved, was added, or was removed — no need to eyeball two PDFs side by side.

Structured change requests

Engineering Change Notices carry their own justification and impact assessment, get reviewed and approved before work starts, and link automatically to the revision that implements them.

Redline & markup

Draw a box directly on the page while reviewing and leave a comment — reviewers see exactly which region a note refers to, not just a free-text rejection reason.

E-signature on every approval

Releasing a revision means re-entering your password and typing your full name — a real signature, recorded as its own immutable audit entry, not just a button click.

Full-text search

Search by part number, description, or text pulled from the released drawing itself — works with any CAD-exported PDF with a real text layer.

Role-based access

Viewer, Engineer, Approver, Admin. Engineers upload; only Approvers can release.

Organize by project

Group drawings into projects and filter the dashboard by them — so the list stays navigable as it grows into the thousands.

Audit-trail export

Every revision's full approval history — who, when, what changed — as a PDF you can hand an external auditor without giving them a login.

Share externally, without an account

Generate an expiring, revocable link to a released drawing for a supplier or customer — pinned to that exact revision, so what they see never silently changes out from under them.

Approvals that hold up

Change control before the work starts, a signature before it ships

Anything with real impact goes through an Engineering Change Notice first — justification, impact assessment, and a reviewer's sign-off, before a single line gets redrawn. And when a revision is actually ready to release, approving it means re-entering your password and typing your full name, not just clicking a button.

An approved Engineering Change Notice showing its title, description, justification, impact assessment, and requester
An approved ECN — justification and impact assessment reviewed before the drawing changes.
E-signature dialog requiring a re-entered password and typed full name to approve and release a drawing revision
Approving a release re-authenticates you — recorded as its own signed audit entry.
Full traceability

Every revision, every approval, every reason why

This is a real revision history from a running instance of Traceline — six revisions of one bracket drawing, each with the actual change description an engineer typed in and a full, unbroken audit trail underneath it.

Revision history timeline for a bracket drawing showing six revisions and their audit trail
Security & deployment

Built for shops that can't be casual about this

IMMUTABLE

An audit log that can't be edited

Even an Admin account can't alter or delete a history entry. The database rejects the write — it's not just an app-level rule.

SCOPED

Access checked on every download

Draft revisions are visible only to their uploader and engineering. Released drawings are visible to your whole team — never the reverse.

MANAGED

We run it, you don't have to

Traceline is a fully managed service — hosting, backups, upgrades, and security patching are ours to handle. No server for your team to operate or keep patched.

AUDITABLE

Ready before the auditor asks

Export a full document register or an aging report of revisions stuck in review, on demand — not assembled by hand the week before a surveillance audit.

See it against your own drawings

Bring a handful of real PDFs. We'll walk through the whole loop — upload, approve, release, obsolete — in about fifteen minutes.