As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BORE SCOPE INSPECTIONS OF THE #2 ENGINE, WE FOUND TWO RIVETS MISSING FROM THE #4 STATOR LABYRINTH SEAL. WE ALSO FOUND DOWN STREAM DAMAGE THAT OCCURRED TO THE 4TH STAGE TURBINE IMPELLER THAT EXCEEDED THE LIMITS OUTLINED IN THE LMM. THESE RIVETS ARE KNOWN TO BE AN ISSUE BY THE OEM. (REF HONEYWELL SB AS907-72-9093 R3) THE LARGER CONCERN IS NOT THE MISSING RIVETS, BUT THE SECONDARY DAMAGE THAT IS HAPPENING AS THE RIVET DEPART THE ENGINE.