As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FLT 4394 - DURING TAKEOFF, BOTH CAPTAIN AND FIRST OFFICER SEATS SLIDE OFF POSITION. CREW WAS UNABLE TO SET LOCK PIN. MAINTENANCE PERFORMED INSPECTION OF CAPTAINS AND FIRST OFFICERS SEAT LOCKING PIN AND SEAT TRACKS. SEAT TRACKS AND LOCKING PINS WERE CLEANED AND LUBED. OPERATIONAL CHECK WAS SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE. (M)