What was found
CAPTAINS FMC BRIGHT KNOB DOESNT STOP, FLICKERS. ACFT GROUNDED. REPLACED CAPTAIN'S MCDU, OPS NORMAL, REF AMM TASK 34-61-01-400-802. OPS NORMAL. REF AMM TASK 34-61-00-750-802 FOR SOFTWARE VERIFICATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CAPTAINS FMC BRIGHT KNOB DOESNT STOP, FLICKERS. ACFT GROUNDED. REPLACED CAPTAIN'S MCDU, OPS NORMAL, REF AMM TASK 34-61-01-400-802. OPS NORMAL. REF AMM TASK 34-61-00-750-802 FOR SOFTWARE VERIFICATION.