How does part genealogy support FAA and EASA audit requests?

Part genealogy supports FAA and EASA audit requests by making it possible to reconstruct the history of a specific part, assembly, material lot, or serialized component. It helps show what was built, which materials and subcomponents were used, which processes and inspections were performed, who performed or approved them, and which records support those events. It does not, by itself, satisfy an audit or guarantee an acceptable regulatory outcome.

In practice, genealogy is useful because many audit questions are part-specific. An auditor or customer may ask for evidence behind a serial number, batch, repair, replacement, nonconformance, concession, or configuration change. A well-controlled genealogy record reduces the time spent searching across travelers, inspection records, certificates, ERP transactions, QMS records, and supplier documents.

What genealogy can show

For aerospace manufacturing and MRO environments, part genealogy commonly supports requests for:

• serial number and lot traceability for parts, assemblies, raw materials, and consumables;
• links between a finished unit and its installed subcomponents;
• routing, operation, inspection, and acceptance history;
• operator, inspector, and approver records where required by procedure;
• tooling, equipment, calibration, or test system references when captured;
• supplier certificates, material certifications, and receiving inspection evidence;
• nonconformance, MRB, rework, repair, deviation, or concession records;
• configuration effectivity, engineering revision, and work instruction revision at the time of execution.

Where the evidence usually comes from

Part genealogy is rarely held in one clean system in brownfield plants. MES may hold execution and traveler data. ERP may hold inventory, lot, purchasing, and shipment records. PLM may hold engineering configuration and revision history. QMS may hold nonconformance, CAPA, deviation, and audit records. MRO systems may hold removal, installation, task card, and airworthiness-related maintenance records.

For audit support, the important issue is not whether one system claims to be the system of record for everything. The important issue is whether records are linked, controlled, retrievable, and aligned to approved procedures. If serial numbers, lot numbers, document revisions, and timestamps do not reconcile across systems, genealogy can create audit exposure instead of reducing it.

What it does not do

Part genealogy does not prove compliance on its own. FAA and EASA expectations depend on the specific approval, certificate, product, maintenance context, procedure set, and recordkeeping obligations involved. Genealogy is evidence that must be supported by validated processes, trained personnel, approved procedures, change control, record retention, and data integrity controls.

It also does not fix missing historical data. If legacy travelers were incomplete, supplier certificates were not linked, rework was documented outside the controlled system, or part substitutions were handled manually without proper approvals, a genealogy report may only expose the gap. That can still be useful, but it is not the same as having complete objective evidence.

Common failure modes

• Uncontrolled manual records: spreadsheets, scanned PDFs, and local logs may not provide reliable searchability, version control, or audit trails.
• Weak integration: MES, ERP, PLM, QMS, and MRO systems may use different identifiers for the same part, order, operation, or revision.
• Incomplete supplier traceability: material certificates and supplier inspection evidence may not be linked to the exact received lot or installed component.
• Configuration mismatch: genealogy may show what was installed, but not whether it matched the correct engineering effectivity at the time.
• Poor change control: updated routes, inspection plans, or work instructions may not be tied back to the version used during execution.
• Unvalidated reporting: audit reports generated from integrated data need defined logic and appropriate validation before they are relied on as official evidence.

Brownfield reality

Full replacement of legacy systems is usually unrealistic in aerospace-grade environments. The qualification burden, validation cost, downtime risk, integration complexity, traceability obligations, and long equipment lifecycles often make rip-and-replace programs high risk. A more practical pattern is to improve genealogy through controlled integration, master data alignment, record linking, and targeted digitization of the highest-risk traceability points.

For FAA and EASA audit readiness, the goal is not a visually impressive genealogy tree. The goal is a defensible chain of objective evidence that can be retrieved, explained, and reconciled to approved procedures. That requires both system capability and disciplined operational use.