As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICER`S COURSE SELECTOR KNOB TURNS BUT DOES NOT CHANGE DIGITS, INTERMITTENT. ACFT GROUNDED. TIGHTENED THE COURSE SELECTOR KNOB. OPS CHECKED NORMAL AND KNOB REPONDS TO DIGITS DETENT NORMAL. PERFORMED BITE DFCS IAW AMM 22-11-00-700-740-806. NO HISTORY IN LAST 30 DAYS.