As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE CONDUCTING A PHASE 4 INSPECTION, THE EXHAUST STACKS WERE REMOVED FROM THE RT ENGINE. A VISUAL INSPECTION HAD INDICATED A CRACKED EXHAUST DUCT. POWER SECTION WAS REMOVED FOR INVESTIGATION AND REPAIRS. THE EXHAUST DUCT HAD CRACKING IN THE AFT END OF THE INNER CONE. THE CRACKSHAD PROPAGATED ALONG THE CONE THROUGH THE EXHAUST DUCT INNER SUPPORT AND THROUG H THE INNER SUPPORT WELD BEAD.