As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THE THE LEFT PILOTS SEAT MOVEMENT LEVER WOULD NOT ALLOW THE SEAT TO BE MOVED FORWARD OR BACKWARD. SEAT WAS LOCKED TO SEAT TRACKS. THE MAINTENANCE VENDOR DISCOVERED A BROKEN BELLCRANKS P/N 1B1421-3 AND 1B1421-5. INSTALLED NEW PARTS, OPS CHECKS GOOD. AIRCRAFT WAS RETURNED TO SERVICE.