As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) COMBUSTION LINER INNER WALL IS HELD TO THE OUTER WALL BY RIVETS. DURING ENGINE DISSASSEMBLY THE INNER WALL WAS FOUND DETACHED FROM THE OUTER WALL AND RETAINED BY ONE REMAINING RIVET. SOME OF THE RELEASED RIVETS WERE FOUND IN THE HPT STAGE 1 NGVS. THE RELEASE OF RIVETS ON THE COMBUSTION LINER ASSY IS A KNOWN PROBLEM, THE OEM HAVE BEEN INFORMED.