As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FUEL FILTER INLET FITTING O-RING EXTRUDED FROM FITTING. THERE WAS NO EVIDENCE OF FUEL LEAKING. DISCOVERED IMPROPERLY MACHINED LAND ON FITTING WOULD NOT ALLOW SEAL TO PROPERLY MATE WITH SEAL RECESS IN HOUSING. REPLACED FITTINGS WITH NEW PARTS WHICH DID NOT HAVE LANDS. LEAK CHECK NORMAL.