Role, operational scope, product classification and compliance architecture
AS9120 is tailored to distributors within the Aviation, Space and Defense supply chain. The practical challenge is not manufacturing control, but preserving requirement flow-down, identity, lot traceability, configuration and documentary conformity as product moves between sources and customers.
AS9120 distributor control is a chain-of-custody problem: requirements, identity, traceability and conformity evidence must survive every handoff.
1 / CORE ROLE
AS9120 distributor controls differ fundamentally from AS9100 manufacturing controls
Dimension
AS9100 manufacturing context
AS9120 distributor context
Role definition
Design, fabrication, machining, assembly and product realization activities.
Procurement, warehousing, inventory management, order fulfillment and distribution.
Operational nature
Processes may intentionally change physical, chemical or functional product characteristics.
Primary emphasis is preserving product identity and conformity. Limited handling such as repackaging, cutting-to-size or kitting requires controlled boundaries and applicable customer approval.
Quality focus
Design controls, production process stability, special-process control, tooling and verification.
Approved sources, traceability, documentation integrity, product verification and counterfeit-parts prevention.
Airworthiness / regulatory boundary
May operate under or support production/design approvals where applicable.
Normally preserves and transfers approved records rather than creating airworthiness status. Any release-document authority depends on specific regulatory authorization, not distributor status alone.
2 / OPERATIONAL CATEGORIES
Define the boundary of distributor operations
01
Controlled handling
Repackaging, cutting raw material to size, kitting and inventory-support activities can be controlled as documented distributor processes when they do not introduce unauthorized changes to product requirements. Controls should preserve identification, lot integrity, cleanliness and traceability.
02
Outsourced special processing
Where an order requires heat treatment, plating, chemical processing, NDT or another process that changes or verifies material/product characteristics, use approved external sources and flow down the applicable technical, quality and regulatory requirements.
03
MRO / serviceable material
Used, repaired or overhauled product requires clear status identification, segregation, historical records and evidence from appropriately authorized maintenance or repair organizations. The distributor should not create an airworthiness determination outside its authorization.
04
Release evidence
Before shipment, verify that product identity, quantity, lot or serial traceability, required certificates, test records, concessions and customer-specific deliverables are complete and consistent with the order.
CONTROLLED HANDLING FLOW
Keep the traceability chain intact through every handling step
For distributor-controlled handling, the practical flow is:
The process should prevent lot commingling, loss of source identity, FOD introduction, incorrect labels, unauthorized substitutions and document-to-product mismatch.
1IdentifyPart, lot, serial, revision and source
2ProtectSegregation, packaging and handling
3VerifyRecords, certificates and order requirements
4TransferShip product with intact conformity evidence
OUTSOURCED PROCESS CONTROL
Three facets of facilitation control
ORDER
Order confirmation
Confirm the processing specification, revision, customer quality clauses and any required approved-source restriction before placing the subcontract order.
FLOW-DOWN
Requirement flow-down
Transmit the required technical data, acceptance criteria, documentation, customer requirements and regulatory obligations to the external processor.
VERIFY
Verification and delivery
Verify returned certifications, test reports, process records and product identity before acceptance and customer delivery.
3 / PRODUCT CLASSIFICATION
Two product categories require different verification logic
A
Commercial / catalog items
For commercial or standard parts, preserve the original manufacturer configuration, source identity and lot/heat traceability. Verify supplier authorization, applicable specification status and required quality records. Any post-source modification should trigger a fresh review of classification, approval and risk controls.
B
Customer-designated parts
When the customer controls the design baseline, approved sources and manufacturing specification, the distributor acts as a procurement and logistics conduit. Do not introduce substitutions, alternate sources or specification changes without authorization.
C
Verification gates
Confirm part number, revision/configuration, approved source, concessions, certificate completeness and serial/lot identifiers before release.
D
Distributor accountability
The distributor remains responsible for the integrity and accuracy of the identification, verification and traceability records it accepts and transfers under the customer order.
PRACTICAL SCENARIOS
Typical aerospace distribution scenarios
High-reliability electronic components: source through authorized or franchised channels where required, retain OEM/authorized-source evidence and maintain unbroken traceability to reduce counterfeit or remarketed-part risk.
Standard aerospace fasteners: source NAS/MS or other specified hardware from approved sources, repack under controlled conditions, and preserve lot traceability on packaging and shipment records.
Customer-designated structural forgings or castings: procure only from customer-approved sources, preserve the required drawing/configuration baseline and deliver the specified inspection and conformity records with the shipment.
Exact permissions, regulatory release authority, source restrictions and processing boundaries depend on the applicable contract, customer requirements, product type and regulatory authorization. This article is practical guidance, not a substitute for the applicable AS9120 text or regulatory requirements.