What you will learn
- What spacecraft assembly, integration, and test work involves
- How procedures, work orders, and test execution are managed
- What nonconformance tracking and closure require
- How as-built records are assembled for delivery
- How to phase a platform from one programme to several
What a spacecraft assembly and test platform is
This platform is the manufacturing record for a spacecraft. It holds the build procedures technicians follow, the work orders that sequence assembly, the test procedures and results that prove each subsystem, the nonconformances raised when something deviates, and the as-built record that documents what was actually flown. When the spacecraft ships, the as-built record ships with it.
Traceability is the point. Years after launch, an anomaly investigation may ask which batch a component came from, who performed a procedure, and what the test result was. The platform must answer those questions from the record, not from memory or scattered files.
Core features
Traceability and procedure discipline are central.
- Procedure and work-order management for assembly steps
- Test procedure execution with result capture and limits
- Nonconformance logging, disposition, and closure tracking
- Component and batch traceability through the build
- As-built record assembly for delivery and review
- Configuration control for procedures, drawings, and revisions
How it is built
Start with procedures and tests for one subsystem, then add traceability and programmes.
- Procedures: build and test procedures for one subsystem
- Execution: work orders, test results, and sign-offs
- Nonconformances: logging, disposition, and closure
- Traceability: components, batches, and as-built records
- Scale: more subsystems, more programmes, and customer review access
Technology choices
The platform should be web-based with shop-floor-friendly views, because technicians work in cleanrooms and test areas, not at desks. Procedure steps need to be readable at a glance and signable without returning to an office.
Configuration control must be strict. Procedure and drawing revisions should be versioned, and work orders should reference the revision in force when the work was done, so the record reflects what was actually followed.
Challenges to plan for
Paper habits persist where the system slows work. Procedure entry and sign-off must be fast in the shop-floor environment, or technicians will record after the fact and accuracy will suffer.
Nonconformance culture matters. If raising a nonconformance feels punitive, issues go unrecorded. The workflow should treat nonconformances as normal engineering process with clear disposition paths, not as blame.
Who it is for, and its limits
Assembly and test platforms fit spacecraft manufacturers, integrators, and suppliers building flight hardware. They fit programmes where the as-built record is a contractual deliverable.
The platform does not design the spacecraft. Engineering design, analysis, and test design stay with engineering teams; the platform executes, records, and traces that work.
What a first release looks like
A first release should manage build procedures, test execution, and nonconformance tracking for one subsystem, with sign-offs and component traceability. As-built record assembly and multi-programme support come later, once technicians have used the system on the shop floor for a full build sequence, including a nonconformance raised, dispositioned, and closed through the system. Shop-floor usability must be proven in the cleanroom and test area, not at a desk.
Take a subsystem build where a component fails its test. The technician records the failure as a nonconformance from the test station, engineering dispositions it as rework, the rework is executed and retested, and the closure evidence attaches to the nonconformance. The as-built record for the subsystem shows the component, its batch, the procedures followed, the test results, and the closed nonconformance. If the nonconformance was handled by email and added to the system afterwards, the traceability promise is broken.
A mistake worth avoiding
The mistake worth avoiding is recording test results after the fact from notes, rather than capturing them at the test station. Retrospective recording introduces exactly the errors the as-built record exists to prevent: transposed values, missing conditions, and results attributed to the wrong unit or configuration. The discipline is point-of-test capture: results entered at the station during the test, linked to the unit, procedure revision, and equipment used, with corrections shown as corrections. An as-built record assembled from reconstructed notes may look complete while being unreliable, and unreliability discovered during an anomaly investigation is the worst time to discover it.
Frequently asked questions
What is an as-built record?
The documented record of what was actually built and tested: components, batches, procedures followed, test results, and nonconformances, delivered with the spacecraft.
What is a nonconformance?
A deviation from a procedure, drawing, or requirement, logged with its disposition — use as-is, repair, rework, or scrap — and closure evidence.
Why track batches?
So an anomaly years later can be traced to specific components and batches, and affected spacecraft or units can be identified.
Can customers review the record?
Yes, with controlled access to the as-built record and test results for their programme, without access to other programmes.
How much does it cost to build?
Cost depends on programme count, subsystem complexity, and traceability depth. One subsystem's procedures are far smaller than a multi-programme platform, so confirm with a scoped quote.