What was found
FIRST OFFICER`S MCDU DIM KNOB CAME OFF. KNOB ON CENTER CONSOLE. ACFT GROUNDED. REINSTALLED AND TIGHTENED SET SCREW, OPS CKD GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FIRST OFFICER`S MCDU DIM KNOB CAME OFF. KNOB ON CENTER CONSOLE. ACFT GROUNDED. REINSTALLED AND TIGHTENED SET SCREW, OPS CKD GOOD.