As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A FLIGHT CONTROL CABLE RUBBED A HOLE IN A PITOT DRAIN LINE (P/N 257SF20735A) THAT CONNECTS TO A PITOT DRAIN VALVE. THIS LINE IS LOCATED UNDER THE COPILOT SEAT AREA. ATTENTION SHOULD BE GIVEN TO THIS AREA DURING INSPECTION TO ENSURE CABLE CLEARANCES.