As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL PRESSURE IN THE DIFFERENTIAL PRESSURE VALVE IS CAUSING SEVERE PITTING INSIDE THE FCU HOUSING. THIS PITTING INSIDE THE FCU HOUSING. THIS PITTING EVENTUALLY BECOMES A PIN HOLE IN THE HOUSING. THIS PIN HOLE ALLOWS A STREAM OF FUEL TO EXIT THE FCU DURING OPERATION. IF THE PROBLEM IS NOT CORRECTED IT COULD CREATE A POTENTIAL FIRE HAZZARD. (K)