As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON PREFLIGHT OF ACFT, RUBBER & METAL SHARDS WERE OBSERVED PROTRUDING FROM M/R SWASH PLATE. ACFT WAS REMOVED FROM SERVICE & TRAILERED TO MX. UPON FURTHER INSPECTION OF SWASH PLATE & REMOVAL OF GREASE COVER FROM SWASH PLATE, METAL SHARDS WERE CAUSED BY THE METAL RETAINING RING UNDER THE SWASH PLATE GREASE COVE & GUIDE BEING SHAVEN BY THE UNI-BALL. THE RUBBER SHARDS WERE CAUSED BY THE METAL SHARDS AS THEY EXITED THE SWASH PLATE GUIDE.