As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)CAPTAIN'S SEAT ASSEMBLY NOT POSITIVELY LOCKING IN FORE/AFT POSITION. SEAT UNLOCKED A COUPLE OF TIMES AND HAD TO BE SHAKEN BACK INTO POSITION IN TRACK. COMBINATION OF BOTH SEAT TRACK LOCKING PIN SPRING S BROKEN AND SEAT TRACK LOCKING HOLES FILLED WITH DUST AND DIRT CAUSED SEAT NOT TO POSITIVELY LOCK. BOTH LOCKING PIN SPRINGS REPLACED AND SEAT TRACK CLEANED.