As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN TROUBLESHOOTING A HIGH ENGINE TEMPERATURE PROBLEM, IT WAS DISCOVERED THAT THE BLEED AIR DUCT COMING OFF THAT ENGINE WAS LEAKING THROUGH A CRACK IN THE FLEXIBLE BELLOWS SECTION OF THE DUCT, WHICH IS NOT VISIBLE UNDER THE DUCT'S SHIELD. THE CRACK WAS DETECTABLE ONLY BY BLANKING OFF THE SYSTEM AND PRESSURIZING THE DUCT.