TS EN 9145

TS EN 9145 defines the framework used in aerospace for Advanced Product Quality Planning (APQP) and the Production Part Approval Process (PPAP). It addresses the quality-assurance flow from initial conceptual product needs through product definition, production planning, product and process validation, product use, and post-delivery service.

How APQP and PPAP fit together

APQP is a structured approach for building quality into a product and process from the earliest stages, rather than relying on end-of-line inspection alone. PPAP focuses on demonstrating that the product and the manufacturing process are ready for production and capable of meeting the defined requirements. Used together, they help align design intent, manufacturing execution, and validation activities before full-rate production begins.

Relationship to the wider aerospace quality framework

This standard is intended to work in a complementary way with EN 9100, EN 9102, EN 9103 and EN 9110. In practical terms, that places APQP and PPAP within a broader quality-management environment that also covers conformity management, measurement verification, process performance control, and maintenance/service contexts. The standard also states that contractual, statutory and regulatory requirements take precedence where there is a conflict, so it is not a substitute for applicable legal obligations.

From a general technical standpoint, standards of this kind are especially valuable where product complexity, traceability, supplier coordination, and process stability are critical. They provide a disciplined way to connect design, planning, validation, production, and after-delivery support across the full product lifecycle.