Glossary

The aviation aftermarket has its own vocabulary — RFQ, 8130-3, exchange, BER — and APEX adds a few terms of its own. This glossary defines both in plain language, with links to the guide that owns each concept. Terms are grouped by theme and alphabetical within each group.

Condition codes

The nine standard trade codes every stock unit carries. APEX never translates them; the console shows them as colored pills. The canonical table, with the operational meaning of each, lives in Inventory & warehouse.

• AR — As Removed. Pulled from an aircraft or engine, not yet evaluated; never counts as sellable.
• BER — Beyond Economic Repair. Repair would cost more than the part is worth; not airworthy.
• IN — Inspected / Tested. Bench-checked or functionally tested and found airworthy.
• NE — New. Factory new, never installed.
• NS — New Surplus. New and unused, but sold outside the manufacturer’s original channel.
• OH — Overhauled. Completed a full overhaul at an approved shop, with certification.
• RP — Repaired. Repaired to a serviceable state, short of full overhaul.
• SCRAP — Scrap. Condemned and permanently withdrawn from service.
• SV — Serviceable. Inspected and fit for service — the default condition when receiving.

Documents & certificates

The full document taxonomy — every type you can attach in APEX — is in Release documents.

• 8130-3. The FAA authorized release certificate. APEX stores and tracks the signed scans; it does not fill the form out. See Release documents.
• AD — Airworthiness Directive. A mandatory airworthiness action from a regulator. In APEX today, AD paperwork is an attachable document type; the work runs as a work order. See AD & SB tracking.
• ATA 106. The ATA Spec 106 part/material certification form, a standard piece of trace paperwork. See Release documents.
• Back-to-birth. A trace chain that reaches all the way to a part’s manufacture — the strongest form of trace. See Compliance.
• C of C — Certificate of Conformity. A supplier’s certification that the delivered item conforms to its order. See Release documents.
• EASA Form 1. The EASA release certificate, the European counterpart of the 8130-3. See Release documents.
• SB — Service Bulletin. A manufacturer’s recommended (sometimes AD-mandated) action; handled like ADs in APEX. See AD & SB tracking.
• Trace. The paperwork chain that shows where a part has been and who released it — what makes an aftermarket part sellable. See Compliance.

Orders & sales

• Core. The removed unit a customer or vendor owes back in an exchange deal. APEX tracks cores as obligations under Sales Orders → Exchanges Due and Purchase Orders → Exchanges Owed.
• Deal. A sales opportunity on the pipeline Kanban, staged from SOURCED to CLOSED WON / CLOSED LOST. See The deal pipeline.
• Exchange. A transaction where a serviceable unit ships out and a core comes back, with the difference settled commercially. See Work Orders and the exchange screens under Sales Orders and Purchase Orders.
• PO — Purchase order. Your order to a vendor for parts or services; receiving a PO books its lines into stock. See Receiving stock.
• Quote. Your priced offer to a customer, moving DRAFT → SENT → ACCEPTED / REJECTED / EXPIRED. See Quotes & contract pricing.
• RFQ — Request for Quote. A customer’s request for a price, landing in the RFQ Inbox. See The RFQ inbox.
• RO — Repair order. Your order sending a unit out to a vendor for repair and back. See the Repair Orders module.
• SO — Sales order. Your order from a customer to sell and ship parts, through confirmation, shipping, and invoicing. See the Sales Orders module.
• Teardown. Disassembling an asset into sellable piece parts. In APEX it’s a work-order type whose harvested units enter stock through the work order. See Work Orders.
• WO — Work order. The central shop record for repair, overhaul, inspection, modification, exchange, or teardown work, staged RECEIVED through SHIPPED. See Work Orders.

APEX terms

• Allocation. A claim that reserves stock for a work order without moving it — allocations are what reduce free to sell. See Valuation & planning.
• Cost layer. A cost record created at each receipt; consumption draws from the oldest layer first, which is how APEX values what you ship and issue. See Valuation & planning.
• Data scope. A per-member visibility filter (customers, vendors) set in Team → Members that decides which records that member sees across the modules. See the FAQ entry.
• Free to sell. Serviceable on-hand stock minus open work-order reservations — the number a broker can safely promise. See Valuation & planning.
• Hold. A named stop placed on a work order (nine reason codes, e.g. AWAITING PARTS, QUALITY ESCAPE); open holds gather on the Hold Board. See Holds & the Hold Board.
• Marketplace. The screen inside the Plugins module where owners and admins install and uninstall plugins. See Plugins & the Marketplace.
• Movement ledger. The append-only history of every stock movement on a part — receipts, issues, shipments, adjustments, transfers, scrap. See Locations & transfers.
• Plugin. An opt-in feature your workspace installs from the Marketplace — hidden until installed, hidden again (data kept) when uninstalled. See Plugins & the Marketplace.
• Portal. The customer-facing site where invited customers track work orders, answer quotes, download documents, and submit requests. See Customer Portal.
• Stage. A work order’s position in its seven-step lifecycle, from RECEIVED to SHIPPED, moved with the stage buttons on the work order header. See Lifecycle & stages.
• Stock unit. A physical piece (or quantity) of a part in stock, with its own serial, condition, location, and cost — the thing you receive, issue, ship, and scrap. See Inventory & warehouse.
• Workspace. Your company’s isolated environment in APEX — its own database, members, branding, and plugins. See Getting Started.