As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DCA - THE CAPTAIN'S SEAT FAILS TO LOCK IN SET POSITION ON THE FORWARD AND AFT SEAT RAIL. THE SEAT SLIDES AFT UNLESS THE HANDLE IS PUSHED FORCEFULLY INTO THE LOCKED POSITION. MAINTENANCE ADJUSTED THE FORWARD CAPTAIN MOVEMENT AND LOCK POSITIONS. OPERATIONAL CHECK IS GOOD AT THIS TIME.