As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WELD ON COOLING DUCT FOR STARTER GENERATOR HAS NO METAL PENETRATION. SKIN JOINT SPLIT AND PARTS ALMOST CHAFED THROUGH AN OIL RETURN LINE. BOTH DUCT INLETS WERE IN SIMILAR CONDITION. ONE OF THE SPLITS WAS .25 INCH AND THE OTHER .50 INCH WIDE. INSPECTION CARRIED OUT AS PER CANADAIR REQUEST.