As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) DURING PROPELLER OVERHAUL IT WAS FOUND THAT AN INCORRECT CYLINDER ASSEMBLY HAD BEEN FITTED NON-STANDARD SPACERS HAD ALSO BEEN FITTED IN ORDER TO CHANGE THE EFFECTIVE LENGTH OF THE PITCH CONTROL RODS - UNAPPROVED PART - PERSONNEL/MAINTENANCE ERROR