As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE PERFORMING HOT SECTION BOROSCOPE, AME DISCOVERED ONE COMPRESSOR TUBINE GUIDE VANE DAMAGED. ENGINE WAS SPLIT TO PERMIT HOT SECTION REPAIR. ONCE THE ENGINE OPEN, 1 DIFFUSER EXIT DUCT WAS FOUND CRACKED AND A PIECE OF THE DIFFUSER EXIT DUCT WAS FOUND AT THE BOTTOM OF THE GAS GENERATOR CAS. DIFFUSER REPAIRED IAW MM, HOT SECTION REPAIR PERFORMED AND ACFT RETURNED TO SERVICE.