as-built records

As-built records are documented evidence of how a product, subsystem, or facility was actually manufactured, assembled, configured, and tested, including any approved deviations from the original design or plan. They capture the real, final state of the build, not just the intended design.

What as-built records include

In industrial and regulated manufacturing environments, as-built records commonly include:

• Final bill of materials (BOM) as used, including alternates and substitutions
• Serialized component and material traceability, including lot, heat, or batch numbers
• Final routing, process steps, and work centers actually used
• Process parameters and key production data where captured (for example, torque values, oven profiles, test results)
• Approved deviations, concessions, waivers, and rework dispositions affecting the build
• Inspection, test, and verification records tied to the specific unit or batch
• Configuration and software/firmware versions installed at release

These records may be compiled from multiple systems such as MES, ERP, PLM, QMS, and test systems, and are often retained as the authoritative reference for what was actually delivered.

Where as-built records are used

As-built records are commonly used for:

• Regulatory and customer traceability in aerospace, defense, medical devices, and other regulated industries
• Supporting audits, investigations, and field issue analysis by showing exact build and configuration history
• Enabling maintenance, repair, and overhaul (MRO) by providing the starting configuration of an asset
• Supporting engineering changes, retrofits, and upgrades by comparing as-designed, as-planned, and as-built states

Relationship to other record types

As-built records are related to but distinct from:

• As-designed data: The engineering intent, typically managed in CAD/PLM (models, drawings, specifications).
• As-planned data: How production intends to build, usually in ERP/MES (routings, work instructions, planned BOM).
• Device or batch history records: In some industries (for example, medical), the formal Device History Record (DHR) or batch record is the regulated package of evidence. As-built records are often a core component of that package.

Common confusion

The term “as-built records” is sometimes used interchangeably with:

• As-built drawings, which focus specifically on updated design documents showing the final physical configuration. As-built records are broader and include process and traceability data, not only drawings.
• Configuration records, which emphasize versions and options selected. As-built records usually include configuration but also cover how the configuration was achieved in production.

Ties to digital operations

In digital manufacturing and MES environments, as-built records are often generated automatically as production executes. Data from work orders, digital travelers, test systems, and quality workflows is aggregated to form a digital as-built or digital birth record for each serialized unit or batch. This supports audits, change control, and plant-wide traceability without disrupting ongoing production.