As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE MAINTENANCE, THE SHEATHING WAS PULLED BACK FROM THE FUEL HOSE ASSEMBLY AND THE ALUMINUM ENDS WERE SEVERELY CORRODED. FURTHER INVESTIGATION REVEALED BOTH ENDS HAD SEVERE CORROSION. THE HOSE IS A FUEL HOSE WHICH RUNS FROM THE FORWARD ENGINE FIREWALL BACK TO THE INLET OF THE AIRFRAME FUEL FILTER.