Backlog volatility and supply chain resilience in aerospace are tightly linked. Highly volatile backlogs amplify risk in constrained, certified supply bases, while resilient supply chains can absorb schedule swings without chronic shortages, expediting, or quality escapes. The relationship is two-way: poor resilience magnifies volatility, and unmanaged volatility degrades resilience over time.

There is no single, universally accepted set of "5 C’s" in supply chain management. Different authors and consultants use different lists (e.g., coordination, collaboration, capability, cost, compliance). In regulated manufacturing, it’s more important to clarify which model you mean and align it with your actual network, systems, and constraints.