As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE INSPECTING ENGINE, LEAK WAS FOUND COMING FROM REAR. AFTER CLOSER INSPECTING, SUSPECTED CRACK WAS FOUND AND ADAPTER WAS REMOVED FOR POSITIVE VERIFICATION. WEIGHT OF VACUUM PUMP STRESSING PUMP ADAPTER CAUSING IT TO CRACK. SUBMITTER SUGGESTED MORE MATERIAL NEEDS TO BE ON FLANGE FOR MORE STRENGTH. STC NR SA444SW.