Used Serviceable Material, Surplus & Teardown

This segment is the secondary market for aircraft parts: used-serviceable material (USM) harvested from retired airframes, surplus inventory from over-buys and fleet exits, and managed teardown/disassembly programmes that convert an end-of-life aircraft into a certified parts pool. The buyer trades a lower price against a serviceable-tag part, so the decisive specifications are the certificate of conformity, dual-release status (FAA 8130-3 / EASA Form 1), back-to-birth traceability and remaining cycles. Asset-management and end-of-life houses sit here, as do surplus-acquisition desks. Distinct from new-parts distribution because the unit is pre-owned and certified serviceable rather than factory-new.