
A practical guide to understanding, validating and controlling special processes, including risk, auditing, documentation and process control.
SPI publications to support understanding, validation, and control of special processes in aerospace, space, defence, and other reliability-critical sectors. Download the guidebook and training material below.
Core SPI reference publications for practical quality and process assurance.

A practical guide to understanding, validating and controlling special processes, including risk, auditing, documentation and process control.

Structured guidance for effective root cause corrective action using the Eight Disciplines methodology, from containment through prevention of recurrence.

Step-by-step PFMEA guidance for identifying process risks, evaluating failure modes and implementing effective prevention and detection controls.

Practical guidance for planning, preparing, reviewing and approving First Article Inspection in aerospace, defence, space and high-reliability industries.

A practical reference covering internal and supplier audits, product and process audits, special-process surveillance, witnessing and document verification.

The Quality Book is a practical, accessible reference designed to bring together essential quality knowledge, methods and tools in one place, supporting both those learning the profession and experienced quality practitioners.

Practical guidance on supplier quality management, supply chain assurance, risk management, auditing and performance monitoring, including the development, review and approval of Deliverable Quality Plans (DQPs).

Practical guidance on assessing and verifying production readiness, including the transition from prototype to full-scale manufacture, process capability, risk management, APQP, PPAP and production controls to ensure consistent quality and sustainable manufacturing performance.
Presentation-based learning resources for teams, workshops and self-development.

Training material explaining special-process principles, validation versus verification, risk, auditing and practical industry examples.

Training on structured RCCA, effective problem solving, systemic improvement and preventing recurrence rather than relying on quick fixes.

Training material covering PFMEA purpose, terminology, risk assessment and practical application for manufacturing and quality teams.
Editable forms and working tools for practical application.

A practical editable 8D report form guiding teams through D0–D8, root-cause verification, corrective action and closure.

An Excel workbook containing assessment tools, process-flow diagrams, a PFMEA form and a control-plan template for practical PFMEA development.
Focused practical guidance on specific technical and process-control topics.
A concise guide to risks including poor coverage, solution entrapment and corrosion, with key design and process controls.
Explains the science and best practices behind effective rinsing and how inadequate rinsing can cause contamination and staining.
A technical publication explaining the fundamental factors that influence paint adhesion and long-term coating performance. It covers cohesion and adhesion, the key mechanisms of adsorption, chemical bonding and mechanical interlocking.
A technical publication highlighting the design and processing challenges associated with electroplating welded tubes, box sections and other enclosed or semi-enclosed components.
A technical publication highlighting the risks associated with faying surfaces, inserts and attachments on components requiring immersion surface treatments such as electroplating, anodising and chemical conversion coating.
A technical publication challenging the routine use of caustic etching as a pre-treatment for aluminium anodising and chemical conversion coating.