Suppliers can only be confident they are working to the latest aerospace engineering requirements if they treat configuration control and version governance as core disciplines, not assumptions. That typically requires a mix of process, contracts, and systems.
1. Make configuration control explicit with customers
Do not rely on informal email or portal habits. Define in writing how “latest” is determined and communicated:
- Contractual clarity: In the PO, quality clauses, or supplier quality agreement, specify the authoritative source of truth (e.g., OEM PLM, supplier portal, encrypted model vault) and what constitutes a released revision.
- Defined handoff: Agree whether the customer provides controlled packages per PO (drawing + spec set + model + notes) or expects the supplier to pull from a portal.
- Change notification rules: Require formal notification and updated POs for drawing/schema changes that affect fit, form, function, key characteristics, or qualification status.
2. Use controlled document management, not ad hoc file shares
Locally, treat customer requirements as controlled documents:
- Central repository: Store drawings, 3D models, specs, standards, process notes, and customer work instructions in a controlled system (QMS, PLM, DMS, or MES) with revision and effective date metadata.
- Obsolescence control: Obsolete revisions should be clearly marked and not available in day-to-day operator views or work packages.
- Access control: Ensure only authorized roles can upload/approve new revisions; operators should consume, not edit, requirements.
- Audit trail: Keep change history for who uploaded, reviewed, and released each revision for use.
3. Integrate requirements into work orders and routings
Simply storing the latest file is not enough; it must be the one used to build the part:
- Link PO to work order: Tie each internal work order to the specific drawing/model revision, specification set, and customer requirements associated with that PO line.
- Digital travelers: Where MES or digital travelers are in place, embed or link the exact revision, so the operator does not need to hunt through network drives or email.
- Printed travelers (brownfield reality): If you still use paper, include the revision and effective date on the traveler and verify against the controlled master before release to the floor.
- FAI linkage: Ensure AS9102 First Article Inspection reports clearly reference the exact configuration (drawing and model revisions) that was inspected.
4. Enforce version checks at key control points
Suppliers should build verification into normal workflows:
- Contract review: Before accepting a PO, confirm that all referenced drawings/specs are present, readable, and match the revision status in the customer system where possible.
- Planning/NC programming review: For CNC or complex parts, require a documented check that CAM programs and setup sheets match the current drawing/model revision.
- Pre-release review to production: At work order release, validate that the attached requirements (drawings, WIs, specs) match the latest controlled revision.
- Inspection checks: For first pieces and FAIs, verify that inspection plans and ballooned drawings are built off the same revision used for manufacturing.
5. Use system-to-system connections where feasible
In many aerospace programs, engineering authority lives in OEM PLM or a controlled supplier portal:
- Portal integration: Where allowed, integrate your internal systems (PLM, MES, or document control) with the customer portal to reduce manual download, renaming, and upload errors.
- Automated version sync: Use APIs or structured exports/imports to pull newly released revisions into your controlled repository, with a human approval step before release to production.
- Traceable mapping: Maintain a clear mapping between the customer’s document IDs/revisions and your internal IDs so audits and investigations can follow the chain easily.
These integrations are highly dependent on the customer’s systems, your IT maturity, export control constraints, and validation of any automation. Full replacement of customer portals with your own platforms is usually unrealistic in a mixed-customer, regulated environment.
6. Control engineering changes and deviation handling
Working to the latest requirements also means managing transitions and exceptions correctly:
- ECN/ECR handling: Implement a structured process for receiving and implementing customer engineering changes, including impact analysis on open work orders, tools, programs, and in-process parts.
- Cut-in logic: Define how and when new revisions take effect (by serial number, lot, date, or work order) and capture this decision in your records.
- Deviations and concessions: Treat any approval to use prior revisions or alternate processes as temporary and fully traceable, linked to specific parts or orders.
- Re-qualification triggers: For changes that may impact fit, form, function, or key characteristics, coordinate with the customer on whether a new FAI or partial FAI is required.
7. Train people and check the system works in practice
Even good systems fail if people bypass them:
- Role-specific training: Train planners, programmers, buyers, inspectors, and operators on where to find current requirements and how to recognize obsolete documentation.
- Layered process audits: Periodically audit open jobs to confirm the drawing/model revision on the traveler, CNC program, and inspection plan all match the controlled master.
- Incident-driven improvement: Treat any build-to-wrong-revision event as a formal nonconformance with root cause analysis, not as a one-off mistake.
8. Brownfield coexistence: digital where you can, controls where you cannot
Most aerospace suppliers run mixed systems: legacy ERP, partial MES, some paper, multiple customer portals. In this reality:
- Avoid big-bang replacements: Replacing all systems at once is risky and often fails due to qualification burden, downtime risk, and complex customer integrations.
- Start with the interfaces: Focus first on controlling the interfaces between customer data, internal planning, and shop-floor execution (clear linkages and version fields).
- Digitize high-risk areas: Prioritize digital travelers, controlled document repositories, and inspection planning for parts with tight tolerances, safety-critical features, or frequent changes.
9. Evidence and traceability for audits and investigations
Lastly, suppliers should be able to prove they worked to the correct requirements:
- As-built records: Maintain a record for each lot/serial showing which drawing/model revision, spec set, and process instructions were used.
- Retention: Align document and record retention with customer and regulatory expectations, often well beyond normal commercial practice.
- Searchability: Ensure you can retrieve by part number, PO, serial/lot, and document ID to respond quickly to queries or potential field issues.
There is no single mechanism that guarantees suppliers are always on the latest aerospace engineering requirements. It is the combination of explicit agreements with customers, disciplined document and change control, and practical system integration that reduces the risk of building to obsolete configurations.
