An ECN is approved. Six weeks later production is still running the old design.
An engineering change notice is approved by the design review team. The change affects the bill of materials, the production SOP, the incoming material specification, the tooling, and the customer drawing reference. Each of these updates needs to happen in a coordinated sequence — old material stock consumed or scrapped, new material ordered, BOM updated in the ERP, SOP revised and operatorsretrained, tooling changed out, customer notified of the design revision level.
Without a managed implementation workflow, ECNs are approved in engineering and then distributed via email. Each recipient does their part when they get to it. Production continues on the old design because the new material has not arrived. The new material arrives but the BOM has not been updated. The BOM is updated but the SOP revision has not reached the shopfloor. The change goes live piecemeal and the cutover date slips by weeks.
An ECN is a multi-function project with a fixed cutover date and a known set of prerequisite actions. Every action is assignable, trackable, and has a dependency on other actions — new material cannot be issued until it is received and inspected; production cannot switch to the new design until the BOM is updated and the operators are trained. HublerX manages the ECN as a structured workflow — assigning each action to the responsible owner, tracking dependencies, flagging actions that are blocking the cutover, and confirming readiness before the switch is made.
Live workflow view
The step-by-step sequence
- 1
ECN approved and implementation plan created
When an ECN is approved, HublerX creates an implementation plan — listing every required action, the responsible owner, the dependency sequence, and the target cutover date. The plan is distributed to all affected functions simultaneously. No manual email distribution required.
On ECN approval - 2
Old material stock disposition managed
HublerX identifies the current stock of the superseded material and surfaces the disposition options — use-up in existing WOs before cutover, return to supplier, or scrap. The planner confirms the disposition and HublerX updates the ERP accordingly. Old material is blocked from issue after the confirmed cutover date.
On plan creation - 3
New material ordered and incoming inspection triggered
The procurement team is notified to raise a PO for the new material specification — linked to the ECN reference. When the new material is received, HublerX triggers the incoming inspection against the updated specification. The new material is not available for production until inspection is passed.
On plan creation - 4
BOM and SOP updates tracked
The engineering team is assigned the BOM update in the ERP and the SOP revision as separate tracked actions — each with a deadline before the cutover date. HublerX confirms that both are complete before the cutover is approved. Operators are notified of the SOP revision and their acknowledgement is recorded.
Parallel to material actions - 5
Customer notification sent where required
Where the ECN affects a customer-approved design or specification, HublerX generates the customer notification — with the change description, the effective date, and the new drawing or specification reference. Customer approval (where required) is tracked before the cutover is confirmed.
On plan creation · if required - 6
Cutover confirmed and first-off inspection triggered
When all prerequisite actions are complete, HublerX confirms the cutover — the date and the first WO to be produced under the new design. A first-off inspection is triggered automatically for the first production batch under the new specification. The traceability record for the cutover batch references the ECN number.
On all prerequisites complete
Results are directional. ECN implementation time depends on the complexity of the change, supplier responsiveness, and customer approval requirements.
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