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Demand-control
Exact PN tightness is normal in aviation procurement. This hub routes buyers through deliberate substitution workflows: capture intent, highlight paperwork risk, and insist on compatibility records—not shortcut guesses.
Possible alternate path. Engineering, compatibility, and documentation review required before use. Sellers remain responsible for certifications and regulatory approvals.
Possible path graph
Illustrative only — never automatic interchange. Compatibility and documentation review required before use.
Describe the line in plain language — part hints, NSN fragments, aircraft, urgency. We classify intent and open the right toolkit lanes (no interchange guarantees).