As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MUFFLER REMOVED TO FACILITATE OTHER MAINTENANCE. UPON REMOVAL, A VISUAL INSPECTION REVEALED A BAFFLE CONE WAS BROKEN AND A LARGE PORTION OF THE BAFFLE WAS MISSING. SUBMITTER RECOMMENDED 100-HOUR INSPECTION INCLUDE THE USE OF A STRONG FLASHLIGHT AND A MIRROR BE USED IN THE LARGE EXHAUST STACK TO EXAMINE BAFFLE INTEGRITY.