What is a Change Control System?
The change control system is the machinery that executes the change management plan: the forms, the tracking tool, the approval workflows, the CCB's procedures, and the links into configuration management that keep product versions honest. Plan = rules; system = the working apparatus that enforces them.
A healthy one is measured by cycle time and traceability: changes move at the pace the plan promises, and any baseline can be reconstructed — what changed, who approved, when, why.
Worked example
On an aircraft-interior retrofit, every proposed deviation enters one system: auto-routed by value, engineering impact attached, CCB queue visible to all, approved changes flowing straight into the drawing revision log. When the certification authority asks why seat rail spec changed in March, the answer is a record with four signatures — retrieved in minutes, which on a certified aircraft is the difference between a question and a finding.