As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS COLD SOAKED, OUTSIDE TEMPERATURE BEFORE DEPARTURE WAS 15 DEGREES. SUBMITTER FEELS THIS WAS A CONTRIBUTING FACTOR TO THIS SEAL BEING DEFECTIVE. COMPANY INITIATED PROCEDURES NOT TO CHANGE PROP BLADE ANGLE UNTIL MINIMUM OF 40 DEGREE OIL TEMPERATURE IS OBTAINED, DEFECTIVE SEAL REPLACED. AC RETURNED TO SERVICE.