As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING A ROUTINE PREFLIGHT INSPECTION, MECHANIC LOOKED UP TAILPIPES OF EXHAUST SYSTEM AND NOTICED SILENCER CONE HAD EXTENDED TO POSITION THAT WAS JUST SHORT OF CLOSING OFF EXHAUST PATH. THIS CONDITION OCCURRED OVER A PERIOD OF LESS THAN 50 HOURS WHEN SAME MECHANIC HAD PERFORMED SAME VISUAL INSPECTION AND NOTED NO UNUSUAL CONDITIONS.