As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) LT PROPELLER NR 4 BLADE SEAL FAILED. INSPECTION OF THE REMOVED SEAL REVEALED THE SEAL TO BE A SEAL FOR A 14SF TYPE PROPELLER WITH A 14RF TYPE PROPELLER GLAND SPRING SUPPLIED. THE 14RF GLANDSPRING IS OF A SMALLER DIAMETER WHEN COMPARED TO THE 14SF GLAND SPRING. UNAPPROVED PART. PERSONNEL/MAINTENANCE ERROR.