As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE IT WAS NECCESARY TO REMOVE THE EXHAUST SYSTEM. WHEN EXHAUST RISER WAS REMOVED FROM MUFFLER IT WAS NOTED THAT HOLES FOR ALINGMENT PIN/CLAMP WERE NOT IN ALINGMENT WITH EACH OTHER. THIS CONDITION RESULTED IN THE EXHAUST SYSTEM BEING INSTALLED UNDER TENSION AND IF NOT CORRECTED THIS CONDITION WOULD HAVE CONTINUED DURING REASSEMBLY.