As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) TRANSFER LOCKOUT/STANDBY ON LIGHT ON, QUICK REFERENCE HANDBOOK PROCEDURE CARRIED OUT AND SYSTEM CAUSED SURGE AND LARGE CABIN RATE CHANGE, USING STANDBY LEVER HUNGTING +/- 2 INCHES. CHANGED NR 2 CABIN PRESSURE CONTROLLER AND OUTFLOW VALVE ACTUATOR.