As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PART WAS RECEIVED TO REPLACE EXISTING PART DUE TIME CHANGE. WHEN PART WAS INSTALLED, PART FUNCTIONED FINE. WHEN FUEL WAS INTRODUCED TO THE SYSTEM FOR A LEAK CHECK, UNIT WAS FOUND TO NOT HOLD A SEAL. THIS IS THE SECOND UNIT FROM SAME FACILITY THAT HAD THE SAME PROBLEM. FUEL CROSSFEED VALVE. WO NR 44103345 (K)