As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEAK CHECK AFTER HMU CHANGE FOUND FUEL HEATER SERVO LEAKING FROM AROUND CAP, EVIDENCE SHOWS IT HAS BEEN LEAKING FOR AWHILE. CLASSIFIED AS CONTINUOUS. ACFT GROUNDED. REMOVED SERVO HEATER IAW MM 73-11-07-000-801-F00. INSTALLED SERVO FUEL HEATER IAW MM 73-11-07-400-801-F00. OPS & LEAK CHECKED GOOD.