As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING NORMAL MAINTENANCE IT WAS NOTED THAT THE PILOTS SEAT BACK WAS TILTED MORE ON THE LEFT THAN THE RIGHT. THE SEAT WAS REMOVED AND THE MATERIAL WAS REMOVED FROM THE SEAT BACK WHICH REVEALED A CRACKED SEAT BACK FRAME AT THE PIONT WERE THE ALUMINUM SEAT MOUNT CASTING ENDS IN THE SQUARE ALUMINUM TUBING WHICH FORMS THE SEAT BACK.