As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A BLACK STAIN NOTED ON THE FUEL SELECTORS 1/2 INCH RIGID LINE. THE LINE WAS FOUND CHAFING OVER HALF WAY THROUGH THE WALL THICKNESS. WHEN THE LINE WAS REMOVED A PENCIL WAS ABLE TO PERFORATE THE LINE. SUBMITTER NOTES THAT THIS IS A DIFFICULT AREA TO INSPECT.