As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, NOTED LEFT ENGINE FIREWALL PRESSURIZATION SHUT-OFF VALVE WOULD NOT FULLY SEAT SUCH THAT PRESSURIZATION OF THE CABIN COULD NOT BE ACCOMPLISHED FROM THE LEFT ENGINE. THE CABLE SWAGE AT THE ENGINE END WAS FOUND TO HAVE FAILED PERMITTING THE CABLE HOUSING TO BACK OUT OF THE CLAMP FERRULE (A PART OF THE CABLE END) I.E., THE FLEXIBLE PORTION OF THE HOUSING COULD MOVE OUT OF THE RIGID END.